miyakore I tried installing Element, but it seems I can't access the GOS server.
To access the GrapheneOS chat rooms on Matrix, three steps are necessary:
- Obtain a Matrix client
- Create an account on a Matrix "home server",
- Point the client toward one or more of the GrapheneOS Matrix rooms
Because Matrix is federated, there is no need for one's home server to be the GrapheneOS.org home server. Different Matrix servers have various policies for who can create an account and whether there are fees. My understanding is that the GrapheneOS.org Matrix home server has accounts only for people who are affiliated with the project (developers, forum moderators, etc.).