Is there any updates to this Carrier list? I’m looking for the correct APN for an Unlimited 5G Data only AT&T SIM. The router will connect as 4G+ with three bars and then it disconnects within 20 seconds. Apparently I have something set up wrong and have tried many different APN’s. I have not tried changing TTL or HL settings. Any insight to using an AT&T SIM would be appreciated.