Been searching online for some open source forum software for a community I'd like to get up and running. I want to make it a paid forum as well. I'm currently not finding anything. I have an idea to use a static site with Stripe integration for the landing page, then connect that into a community sub-domain. That looks like the only option. Perhaps someone knows of an open-source forum with paid membership features built-in already? I'm trying to stay away from Discourse and others since the monthly price is way too high. I'm trying to keep the project as low cost as possible.