I have just tested the same setup here: Mikrotik KNOT with 1nce SIM card.
It took about
24 minutes to establish a PPP connection.
RouterOS 6.48.4
My settings are default except for
- Dial on Demand is off
- Modem Init is AT (I am not sure, if this is neccessary)
- APN is iot.1nce.net
Best, auoa