Updated to Homeserver version: Synapse 1.80.0 - please report issues.
Also have enabled encryption for Telegram bridge.
Web client for registration and chat is available here: chat.group.lt
For more convenient use, a suggestion would be to use other clients, the list can be found here. (Use the server in settings you have registered with, if you have used chat.group.lt for registration - default server is group.lt)
If you have issues with group.lt matrix server post here.
We have a couple of public rooms - please check them out!