We are still in the initial testing phases for Matrix. Please be aware that the Matrix instance is still in heavy development. If you’d like to collaborate at a more stable location, please use IRC.
Matrix is an instant messaging (IM) platform where you can talk to Ubuntu community members, on topics ranging from idle chit-chat, over community improvements, to support with your Ubuntu.
If you just want to get everything set up and start chatting, take a look at our onboarding instructions