I have a Flexy 205 that has this message appearing and dropping connection. The status shows 3 to 4 bars for signal strength. This seems to be the most relevant message amongst the myriad other appear in the logs.
-27208 emodem-GSM network not found
Here are a few others
-33233 t2m-Talk2M: read VPN server address failed openvpn
-29626 ovpn-VPN Connectivity test has been forced openvpn
29624 ovpn-Could not read Talk2M VPN server address, using last valid.
33226 t2m-VPN connection timeout
Is there something that can be done to improv connection reliability?