When an open-source project switches from using github/gitlab/etc issues for bug reports to using a Discourse instance for all discussion, it's a sign the project is falling apart.
Actual bug reports should be kept close to the source code. Support, sure, use a forum.
social.coop is a cooperatively-run corner of the Fediverse. The instance is democratically governed by its members, who generally share an interest in the co-op model, but topics of discussion range widely.
Our instance is supported by sliding scale contributions of $1-10/mo made via Open Collective. You must have an active Open Collective account to apply for membership; you may set one up here