i use att and t-mobile
i use a regular sim card and just get the $15 unlimited text/month per sim card.
I am having the same issue and i have even moved the system
i am in the US…i have tried T-mobile and att sim cards.
I still get sim card disabled-inactive message.
Restarting the modem and the whole machine doesnt solve my issue.
Please help…my phone number is 951.208.8600