Unable to unlock 1Password using my Apple Watch

I'm resubmitting this because I've forgot to upload my diagnostic file. So here's the new bot # RPP-27345-657.

On the other hand, Jac asked me to do this full sequence to make sure the connexion between my Mac and my watch was pristine:

Disable Apple Watch Unlock in 1Password for Mac (1Password > Settings > Security > Uncheck "Apple Watch"). (If you don’t see the Apple Watch option in 1Password then skip this step.)
Disable Apple Watch Unlock for your Mac (In the MacOS menu bar:  > System Settings > Touch ID & Password > Uncheck your Apple Watch under "Use your Apple Watch to unlock your applications and your Mac")
Turn off your Mac.
Restart your Apple Watch: Restart your Apple Watch - Apple Support
Turn on your Mac.
Enable Apple Watch Unlock for your Mac (In the MacOS menu bar:  > System Settings > Touch ID & Password > Check your Apple Watch under "Use your Apple Watch to unlock your applications and your Mac")
Enable Apple Watch Unlock in 1Password for Mac (1Password > Settings > Security > Check "Apple Watch").

Indeed I used to do this a lot before, but not anymore - I'm now always able to unlock my MacBook Pro 16'' with my watch.

Here's what I've done to correct this (and not sure which corrected the problem):
* Upgrade to Sonoma
* Connect both external displays directly to my laptop (instead of using a Caldigit TS3 for external monitors)

Now we need to correct the 1Password issue and it's inconsistencies - sometimes the watch icon is there and I'm able to unlock (with the popup) and sometimes the watch icon is not there and I have to manually type my zilion characters password when that happens!....