Hi @gibarro,
I checked the plugin with the versions you provided and it is working fine.
If Allow user to comment on uploaded media
setting is disabled then users cannot comment on the medias.
Note that the above settings only applies to Comment fields within a lightbox media. Users can still comment on media in the BuddyPress Activity feed. If you want to disable these comments the please disable Enable media in comment
settings and this is available in following path: rtMedia Settings > BuddyPress > Comment Media
.
Reference Link: https://prnt.sc/UyTe4oueHohA
I hope this will fix your issue.
If still it doesn’t work, please share some screencast to understand the issue better.
Regards,
Pooja