The Kunena team has announce the arrival of Kunena 7.0.8 [K 7.0.8] in stable which is now available for download as a native Joomla extension for J! 5.4.x/6.0.x./6.1.x. This version addresses most of the issues that were discovered in K 6.2 / K 6.3 / K 6.4 and issues discovered during the last development stages of K 7.0
It seems that the integration updates JomSocial user points well unless Kunena is setup for any moderation. If moderation is set, then the user points update triggered by onAfterPost event never gets called.
Is there an OnApproved event or something like that?
When the option to require approval for new users (Moderate New Users) is set, it appears that the moderator was getting the points rather than the user that submitted the post.
So I had to make some code changes to the Kunena JomSocial Integration plugin.