Man, Qolsys straight up offered to help and the dealer wouldn’t follow up?
Can you advise - can I use the SIM card out of my old IQ 2 panel and swap it into the 2 plus panel (both verizon) ?
No, I wouldn’t try this. I’ve not seen anyone try to do it on an IQ Panel yet, but for other Alarm.com modules whenever you try to swap the SIM card it will just lock down the SIM and it will be unusable even if you swap back.
A registered panel means that there is an Alarm.com account still tied to the module. Was this panel sold by the same vendor? (If so I would recommend avoiding that vendor in the future) Or was this purchased directly from a user, like through ebay?
The seller would need to have the Alarm.com account deleted or that panel would be non-functional for anyone else. I would recommend returning it if they cannot cancel the existing account.