Question Kunena 5.2.6 Email Notification Error

Yes, it works with value 0, but my question is, why does having a value other than 0 cause an error.  Is it a Kunena bug or something else?  I have been running Kunana with value 10 for years and have never had any problem until early Feb when it stopped working.

Is there someone out there that could test it on another Kunena installation, because if it is a Kunena bug, it should be fixed!

I just tested it on my own forum Email to Multiple Recipients at 10
Visible Email Recipient = with different email addresses like hotmail gmail etc go well
so check again if there is no mistake in your e-mail address
or test with a different e-mail address entered there

Thanks for that, but actually the problem is elsewhere, it is related to the 'E-mail Recipient Privacy' parameter, if it is set to 'Hide Other Recipients (BBC)', it only works with E-mail to Multiple Recipients = 0, however, if 'E-mail Recipient Privacy' is set to 'Display all Recipients (TO)', 'E-mail to Multiple Recipients' can be set to any value and the messages are still sent.

Could you please test the above scenario?

Test done and for me it only works with set to 'Hide Other Recipients (BBC) = 0 or 10 etc
all with all other settings nothing comes to my alternative e-mail address that is entered there
ps
if I test existing user's E-mail address then the Display all Recipients (TO) works for me.

I'm not sure, but I have found in my testing that this can be the case if the email address entered is the same as the one a user has in their profile. Is it possible, that your email address in your profile is the same as you've entered in the email field?
Try it with another email address in this field. 

Thanks, I think it confirms that there is a problem, something that worked before no longer works, I am not sure if it is a Kunena bug or some cross-impact from other components, one way or another, I believe it should be fixed.
How do we make the Kunana developers to take it up as a task for the next release?