[SOLVED?] Google Play: Verify that it's you

 On my work phone google asked: "verify that it's you" - but I could not log in in any way. On other devices Google Play worked. 

I tried and tried, but nothing seemed to work - not even if I took the correct password from other devices. 

The final solution: resert the phone!

Nope - that did not do the trick.

And now the phone seemed utterly useless ... However:

Now this is strange: an old password worked .. even though it was rejected on some systems. The logic is totally absent here, but alas finally I could log in. 

The Cure:

1. Reset the phone to factory standard
2. Install & Use Huaweis Phone Clone 
3. Scan a QR
4. Transfer the data

I had to wait for 15 minutes or so, then the data was transferred. Probably all my data is in China too now. 

Then Google Play worked again.

I used around three hours fighting this #!!!%&&%&!! problem

PS: I am not the only one having these issues. On the web there are several people fighting the same kind of issue. They range from despair to angryness. I almost gave up. And I really don't know why things are working now.

PPS: I was lucky to have another phone that worked. If that had not been the case, well ... let's not even thing about that here.