In the morning the same problem … no SMS possible.
SIP make also problems … I use VoIP and classic Mobile-SIM
Jan 02 11:11:03 pureos org.gnome.Calls-daemon.desktop[1255]: outbound(0xaaaae236a5e0): FAILED to validate sip:foo@bla:53075;user=phone;transport=udp
Jan 02 11:11:03 pureos org.gnome.Calls-daemon.desktop[1255]: outbound(0xaaaae236a5e0): FAILED with 200 OK
Jan 02 11:11:03 pureos org.gnome.Calls-daemon.desktop[1255]: nta_agent: tport: Bad message
Recieve no 2fa SMS and send no SMS. 
After reboot, got all 2fa messages …