Solved Kunena menu comes and goes. Repeatable

Let me preface this by saying that I have searched the forum(s) and I have reviewed the Kunena menu troubleshooting documentation, and have used the suggested methods for resolving Kunena menu related issues.

This is a new Kunena 5.0.6.1 install on a recent Joomla 3.6.5 build.
Other environmental info:
PHP Built On - Linux info 3.0 #1337 SMP Tue Jan 01 00:00:00 CEST 2000 all GNU/Linux
Database Version - 5.5.54-0+deb7u2-log
PHP Version - 7.0.15
Web Server - Apache
Joomla! Version - Joomla! 3.6.5 Stable
Joomla! Platform Version - Joomla Platform 13.1.0 Stable

I have purchased and installed the Powered By Remover.

The forum on my site is only viewable to registered users. Main menu item pointing to Kunena forum is only viewable to registered users.
The Kunena menu appears to be viewable only under certain conditions and disappears under other conditions. The conditions are 100% repeatable.

I tried rebuilding the menu. I tried wiping it out and restoring it. I haven't made any changed to the CSS for the menu. The permissions on the Kunena menu are the "out-of-the-box" settings.

By shear accident I found that I am only able to get the menu links to display by clicking on the dropdown at the far right of the menu (where my avatar shows really small), then clicking on "preferences". As long as I stay within the forum context, the menu seems to remain. However, If I go outside of the forum to any other part of the website and then return to the forum, the Kunena menu items have all disappeared. The outer box border remains, but the button / links are completely gone, until I go back into the little profile dropdown menu, click on preferences and get it to come back.

I have inspected the CSS to see if there is anything changing anything that might effect the display of those items, but I don't see anything.

Please help with resolving this issue. The forum is essentially complete. However, with this issue I can't make it available to our members.

Attached are some screen captures.

Please create a configuration report. www.kunena.org/docs/en/faq/configuration-report

Database collation check: The collation of your table fields are correct

Joomla! SEF: Enabled | Joomla! SEF rewrite: Enabled | FTP layer: Disabled |

This message contains confidential information

htaccess: Exists | PHP environment: Max execution time: 50000 seconds | Max execution memory: 256M | Max file upload: 64M

Kunena menu details:

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ID	Name	Menutype	Link	Path	In trash
320	Discussion Board	mainmenu	view=home&defaultmenu=271	member-area/discussion-board	No
379	Forum	kunenamenu	view=home&defaultmenu=381	forum	No
380	Index	kunenamenu	view=category&layout=list	forum/index	No
381	Recent Topics	kunenamenu	view=topics&mode=replies	forum/recent	No
382	New Topic	kunenamenu	view=topic&layout=create	forum/newtopic	No
383	No Replies	kunenamenu	view=topics&mode=noreplies	forum/noreplies	No
384	My Topics	kunenamenu	view=topics&layout=user&mode=default	forum/mylatest	No
385	Profile	kunenamenu	view=user	forum/profile	No
386	Help	kunenamenu	view=misc	forum/help	No
387	Search	kunenamenu	view=search	forum/search	No

Joomla default template details : yoo_eat | author: YOOtheme | version: 1.0.8 | creationdate: March 2015

Kunena default template details : Crypsis | author: Kunena Team | version: 5.0.6.1 | creationdate: 2017-01-28

Kunena template params:

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{"DefaultCategoryicon":"","profileIconset":"default","DefaultIconset":"default","editorIconset":"default","lightboxColor":"white","bootstrap":"0","icomoon":"1","tooltips":"1","borderless":"1","SubjectLengthMessage":"80","fullactions":"1","quick":"0","displayMenu":"1","displayDropdownMenu":"1","displayDropdownContent":"1","displayModule":"1","displayBreadcrumb":"1","displayAnnouncement":"1","displayFooter":"1","avatarPosition":"left","avatarType":"img-circle","labels":"0","whoisonlineName":"default","formRecover":"0","topicicontype":"B2","fontawesome":"0","socialshare":"0","socialtheme":"classic","writeaccess":"0","localstorage":"0","IconColor":"inherit","IconColorNew":"#48a348","video":"1","maps":"1","emoticons":"1","twitter":"1","ebay":"1","link":"1","picture":"1","hide":"1","spoiler":"1","table":"1","code":"1","quote":"1","divider":"1","instagram":"1","soundcloud":"1","confidential":"1","hr":"1","listitem":"1","supscript":"1","subscript":"1","numericlist":"1","bulletedlist":"1","alignright":"1","alignleft":"1","center":"1","underline":"1","italic":"1","bold":"1","strikethrough":"1","colors":"1","size":"1","avatarSizeX":"40","avatarSizeY":"90","avatarSizeXThumb":"36","avatarSizeYThumb":"36","avatarSizeXWelcome":"72","avatarSizeYWelcome":"72","avatarSizeXList":"36","avatarSizeYList":"36","avatarSizeXPost":"144","avatarSizeYPost":"144","avatarSizeXProfile":"200","avatarSizeYProfile":"200","templatebyText":"","templatebyName":"","templatebyLink":""}

Kunena version detailed: Kunena 5.0.6.1 | 2017-01-28 [ Falanouc ]
| Kunena detailed configuration:

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Kunena config settings:
board_offline	0
enablerss	0
threads_per_page	20
messages_per_page	6
messages_per_page_search	15
showhistory	1
historylimit	6
shownew	1
disemoticons	0
template	crypsis
showannouncement	1
avataroncat	1
catimagepath	category_images
showchildcaticon	0
rtewidth	450
rteheight	300
enableforumjump	0
reportmsg	1
username	1
askemail	0
showemail	0
showuserstats	1
showkarma	1
useredit	1
useredittime	0
useredittimegrace	600
editmarkup	0
allowsubscriptions	1
subscriptionschecked	1
allowfavorites	1
maxsubject	50
maxsig	300
regonly	1
pubwrite	0
floodprotection	0
mailmod	0
mailadmin	0
captcha	-1
mailfull	1
allowavatarupload	1
allowavatargallery	1
avatarquality	100
avatarsize	1024
imageheight	800
imagewidth	800
imagesize	150
filetypes	txt,rtf,pdf,zip,tar.gz,tgz,tar.bz2
filesize	120
showranking	1
rankimages	1
userlist_rows	30
userlist_online	0
userlist_avatar	1
userlist_posts	1
userlist_karma	1
userlist_email	1
userlist_joindate	1
userlist_lastvisitdate	1
userlist_userhits	0
latestcategory
showstats	0
showwhoisonline	0
showgenstats	0
showpopuserstats	0
popusercount	5
showpopsubjectstats	0
popsubjectcount	5
showspoilertag	1
showvideotag	1
showebaytag	1
trimlongurls	1
trimlongurlsfront	40
trimlongurlsback	20
autoembedyoutube	1
autoembedebay	1
ebaylanguagecode	en-us
sessiontimeout	1800
highlightcode	0
rss_type	topic
rss_timelimit	month
rss_limit	100
rss_included_categories
rss_excluded_categories
rss_specification	rss2.0
rss_allow_html	1
rss_author_format	name
rss_author_in_title	1
rss_word_count	0
rss_old_titles	1
rss_cache	900
defaultpage	recent
default_sort	asc
sef	1
showimgforguest	1
showfileforguest	1
pollnboptions	20
pollallowvoteone	1
pollenabled	1
poppollscount	5
showpoppollstats	1
polltimebtvotes	00:15:00
pollnbvotesbyuser	100
pollresultsuserslist	1
maxpersotext	50
ordering_system	mesid
post_dateformat	ago
post_dateformat_hover	datetime
hide_ip	1
imagetypes	jpg,jpeg,gif,png
checkmimetypes	1
imagemimetypes	image/jpeg,image/jpg,image/gif,image/png
imagequality	50
thumbheight	32
thumbwidth	32
hideuserprofileinfo	put_empty
boxghostmessage	0
userdeletetmessage	2
latestcategory_in	1
topicicons	1
debug	0
catsautosubscribed	0
showbannedreason	0
showthankyou	1
showpopthankyoustats	0
popthankscount	5
mod_see_deleted	1
bbcode_img_secure	text
listcat_show_moderators	0
lightbox	1
show_list_time	720
show_session_type	2
show_session_starttime	1800
userlist_allowed	0
userlist_count_users	1
enable_threaded_layouts	0
category_subscriptions	post
topic_subscriptions	every
pubprofile	0
thankyou_max	10
email_recipient_count	0
email_recipient_privacy	bcc
captcha_post_limit	0
image_upload	registered
file_upload	registered
topic_layout	flat
time_to_create_page	0
show_imgfiles_manage_profile	1
hold_newusers_posts	0
hold_guest_posts	1
attachment_limit	8
pickup_category	0
article_display	intro
send_emails	1
fallback_english	1
cache	1
cache_time	60
iptracking	1
rss_feedburner_url
autolink	1
access_component	0
statslink_allowed	1
superadmin_userlist	0
legacy_urls	0
attachment_protection	0
categoryicons	1
avatarresizemethod	2
avatarcrop	0
user_report	1
searchtime	365
teaser	0
ebay_language	0
twitter_consumer_key
twitter_consumer_secret
allow_change_subject	1
max_links	6
read_only	0
ratingenabled	1
url_subject_topic	0
log_moderation	0
attach_start	0
attach_end	14
google_map_api_key
attachment_utf8	1
autoembedsoundcloud	1
emailheader	/media/kunena/email/hero-wide.png
user_status	0
plain_email	0

| Kunena integration settings:

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Kunena - AlphaUserPoints Disabled
Kunena - AltaUserPoints Disabled
Kunena - Community Builder Disabled
Kunena - Easyblog Disabled
Kunena - Easyprofile Disabled
Kunena - Easysocial Disabled
Kunena - Gravatar Disabled
Kunena - JomSocial Disabled
Kunena - Joomla Enabled: access=1 login=1
Kunena - Kunena Enabled: avatar=1 profile=1
Kunena - UddeIM Disabled

| Joomla! detailed language files installed:

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Joomla! languages installed:
en-GB	English (en-GB)

Third-party components: None

Third-party SEF components: None

Plugins: None

Modules: None

Links of other menus, which are linked to the forum, must be Menu Item Type = Menu Item Alias (see the image) .
There is a wrong menu item in your main menu.

This resolved my issue. Thank you for your help.