Hello
Yes exactly, I have the same problem, and many more, with JA comment (see my other post as of today).
We pay to be able to access more Joomlart stuff but they seem to propose components that are not updated (at least one) and conflicts with recent Joomla versions.
This is indeed very disappointing, even more so because this is a quite essential function (comments on posts).
We would like to hear more from support guys!
Best
François