Yale Access Bluetooth suddenly broken, or maybe not?

I’ve been using the Yale Bluetooth Integration for my Yale Assure Lock 2 for many months, pretty much works perfectly. Suddenly today I get the following message:

I tried reloading the Yale Bluetooth integration, but it’s not the August cloud integration so, unsurprisingly, that did not resolve the issue. I have no record of my offline key, so I’m kinda stuck.

But the thing is the lock still seems to work perfectly - I can lock and unlock it and check the status just as before. So has the integration failed or not??

The only HA change today is I had updated to Home Assistant OS 15.1 a couple hours earlier.

Can I ignore this message or am I gonna have trouble with my Yale lock at some point later on?