As published in this forum post, Rocket.Chat will begin enforcing the requirement that your workspace is registered in order to send push notifications.
-> For new brand new registrations, please follow the steps to register your self managed instance to Rocket.Chat Cloud can be found below:
-> If you already have a registered server and you cannot connect/synch to our Cloud, please follow the steps below:
2. Copy the new token on Admin > Connectivity Services and hit "Connect" (an error might be triggered, please disregard it)
3. Hit "Sync"
4. This will probably generate a duplicate workspace. If this happens, you can delete the old one(s) in the Cloud Console
We kindly also ask you to take a look also in the following posts which have some important updates regarding the registration:
If you still have issues in the connection/synchronization process, please open a ticket with the tag "[Registration Issue]" in ticket subject so we can track it down and assist you as soon as possible.