Cannot Verify the "Google Public Key" (Unity 2022)

Unity Engine
, ,
1

I recently moved to Unity 2022 and I’m stuck with this. I cannot solve it.

9444935--1325270--Unity - Google Licence Key.png
9444935--1325270--Unity - Google Licence Key.png458×546 40.1 KB

It makes no sense. The Dashboard (Admin Portal) > Current Project > Project Settings already had the key.
I deleted the field, reentered the key (as provided by Google in the Developer Console, in the App’s Monetization Settings subsection). I also refreshed the page, just in case.
When I press “Verify”, I’m told to use a proper format in red letters. >:[
I’m building for Android. I closed Unity, the Hub, deleted the Library and Temp, etc.
Nothing good happens.

2

Note that I tried my luck by creating a Google Play tangle file nonetheless and it is created without issue, containing the obfuscated version of the Licence Key too.
So what is really going on here and am I to expect a major issue in the app later on?