I just did an on line chat and they created a ticket:
Lucia > Since error GSM-7 is a network issue, what I can do is to escalate this On Demand issue to our system electrical engineer to
Lucia > I will create an open ticket and they will be able to call you back within 72 hours for further investigation.
My ticket number is: CR314555427
You may want to let them know others have the issue.