[2.3.4.117 C7] Ring Gen 2 Keypad

In this thread:

@bcopeland mentioned something about "nonces" getting out of sync. What does it take to get them back INTO sync? I am wondering if that is what I'm seeing with my Ring Keypad??

Where I'm seeing things get hosed up is when things like entering an invalid or too long of a code is done--so these might be semi-"edge" cases. Something happened that has my keypad pretty much locked out and this is what I'm wondering about.