Solved RSS feeds

My provider MijnDomein recently moved to another platform and as a consequence my website has a malfunction in the RSS feeds. Platform is now running under PHP7.1, but same issue is under PHP5.6 The Helpdesk of MijnDomein gave the following response:

Dag Han,

Ik heb de feed uitgebreid gecontroleerd. Het probleem is dat de feed simpelweg te veel tijd nodig heeft om te genereren. Zelfs als ik 1024 MB geheugengebruik toesta laadt de feed vaak niet snel genoeg, en krijg je een timeout.

Omdat ik hiervoor geen oorzaak kan constateren binnen ons platform adviseer ik je hierover contact op te nemen met de makers van het forum:

Which translates into that they have checked the feed even under 1024MB memory and they see that the feed uses too much time even to generate the feed.

Looks like the feed is catching all topics and messages.

On the last 2 builds we have fixed some rss issues. Maybe you need to recheck the new feed urls, that are showed.
Else you can try the limit or time filter on the kunena config , on the rss tab

I have retyped the RSS aldfaerforum.nl/forum/topics/mode-topics.feed and no result.

On the Tab RSS I can not find any indication of time limits and or filter. Is there a renewed Tab??

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398	Forum & registreren	kunenamenu	view=home&defaultmenu=140	forum	No
400	Index	kunenamenu	view=category&layout=list&catid=0	forum/index	No
401	Recente onderwerpen	kunenamenu	view=topics&mode=replies	forum/recente-onderwerpen	No
404	Geen antwoorden	kunenamenu	view=topics&mode=noreplies	forum/geen-antwoorden	No
402	Nieuw onderwerp	kunenamenu	view=topic&layout=create	forum/nieuw-onderwerp	No
403	Mijn onderwerpen	kunenamenu	view=topics&layout=user&mode=default	forum/mijn-onderwerpen	No
532	Door mij gestart	kunenamenu	view=topics&layout=user&mode=started	forum/door-mij-gestart	No
405	Profiel	kunenamenu	view=user&layout=edit	forum/profiel	No
399	Zoeken	kunenamenu	view=search	forum/zoeken	No
406	Donaties	kunenamenu	view=misc	forum/donaties	No
407	Help	kunenamenu	view=misc	forum/help	No
408	Geen antwoorden - 2	kunenamenu	view=topics&layout=moderator	test	Yes

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I just received 21 topics
Han

Sorry I posted the message on a buggy edge beta.