Just updated to the latest Garmin Express 22.214.171.124 and the new feature is a regular crash "Garmin Express quit unexpectedly" You can reopen the application..... and each time it does it again. Marvellous. Have reported it.
I'm seeing the same behavior. I've tried rebooting, re-installing the app, and uninstalling/reinstalling the app. None of it helped. I also tried v6.15.0, which was just released today, but that also crashes. I've filed a support request with Garmin.
I just bought a new Garmin device and I encountered this problem so it is STILL happening. I took the device back to the retailer for a refund and won't be buying any more Garmin devices for the foreseeable future.