The SIM port works. I can put in an older SIM card and connect to the network without any problems. The only time I have an issue is using a new "5G capable" SIM card which should be backwards compatible.Try to check the SIM port. Mikrotik's SIM port are extremely fragile.
Regards.
I'm getting my adapter today so I should be able to have an update soon on if the Modem Firmware update fixed my issue. I will keep you posted.I have wAP-LTE-US running version 7.4 but still cannot see the SIM or connect to LTE.
did anyone succeed to connect to LTE ?