Notifications problem

I have a problem with notifications no longer working on the local server and I don’t know why. Please help me.

Legacy local server notifications were provided by a 3rd party service (from Google I think).
Maybe that service has been stopped, or now requires additional authentication which the local server can’t provide.
Obviously notifications require an external internet connection, so I assume your server has that?

You could look at using an alternative messaging service from your devices.

Pete.