I just started a subscription today after upgrading my modem. I already have an Alarm.com account. How do I merge/activate Surety subscription and my Alarm.com account?
Just to make sure all is clear, this is not possible.
Transfer of Alarm.com accounts is available between dealers and some support it, but the case you described it would not be possible to merge old account data.
Registering with Surety is creating a new account.
With a new module, there is nothing linking that panel to an old account. The cell module is what ties the system to an Alarm.com account.
The first step to troubleshoot the module signaling would be here:
Follow the steps for GC3 there, then after boot up try a cell test from the panel. Any change?