Why isn't there a proper OnlyOffice user forum?

Does anybody know, why there is no OO user forum? It’s fine to have this OO-section for questions related to the integration of OO into NC, but the mayority of questions I’d had regard the functions of OO itself.

I only found this:
http://dev.onlyoffice.org/

but you need to address questions to them, this is the Nextcloud forum.

oops, alright, I didn’t follow that URL becaus I don’t feel like a developer being one of these “5 Million users”. Thanks, I try to find my answers there!