How can I get the latest version of messenger to BELIEVE that it's the latest version?

I've gone through getting the newest version of Messenger installed three times, seemingly successfully. When I check the app settings, I get

Specifications

Publisher Meta
Version 2150.23.211.0
App 175 MB
Data 152 MB
Total usage 327 MB

According to the store, 2150.23.211.0 IS the latest version. So when I click on the icon, why do I KEEP GETTING the

Update your app
Update by Nov 1 1 to continue
using the Messenger app.

message?

Is there any way that I can find the version of the running messenger to make sure that it's the same as the as what the app settings say it is? I temporarily renamed the previous version -- C:\Users\jeffl\AppData\Local\Programs\Messenger\Messenger.exe --
to Messenger.xxx to make sure that it wasn't launching that one somehow. There was no difference when I clicked the latest meta version icon in the menu bar. The notification just won't go away.

Also. does anyone know where the EXE file for the new version is located on your hard drive?