Failed to connect RC76xx and AirVantage service

IoT Modules RC76
3

Hi @Vianney

SIM is ok, I checked, I can oped PPP connection and send data, so the data channel is ok and the APN is correct.

Today the device successfully connected with AVMS automatically after boot, but when I close session (AT+WDSS=1,0) and try to open it again, it wasn’t open, with no notification or errors

+CREG: 1

+WDSI: 4

+WDSI: 6

+WDSI: 23,0
+WDSI: 4

+WDSI: 6

+WDSI: 23,1

at+wdss=1,0
OK

+WDSI: 8
at+wdss=1,1
OK
at+wdsg

+WDSG: 0,3
+WDSG: 1,0

OK
at+wdsi?

+WDSI: 4479
at+wdss=1,1

OK

As you can see, there are no notifications and errors in this listing at all, although notifications are enabled