Hello, We've been using 3CX since about version 5 with a US Voip provider. We've been using the standard 3CX template since offered and everything has worked great. We upgraded to 8.0.10824 and it seems that the line loses registration to the VoIP provider after a period of time. The VoIP provider no longer sees our system and calls don't connect until we login to 3CX and click "Refresh Registration" the registration period is set to the standard we've always used 3600, but the system doesn't seem to be renewing the registration at that specified time. (3CX Trunk Status still shows as registered, but VoIP provider does not see it.) We tried deleting the provider and creating a new one but we have the same issue. All services are running, and STUN is enabled. Any ideas on how to get this fixed?