This user post discusses utilizing that glass break with a GC3 and might be of assistance!
I am also working on trying to remove the Kwikset from the Vivint Sky Panel – evidently the standard installer code is not working. So I assume calling them is the best option?
We wouldn’t be able to assist with any codes on the Sky Panel itself, so it may be good to try the vendor. We could not say whether they’ll be able to assist.
Typically you can perform a “Remove Device” on a Z-wave device from any controller to clear the device’s parent network link in order to use it again. Unfortunately other users have indicated that with the Sky Panel they have had to do it from the Sky Panel itself to fully function.