I can't register an AdMob account

[Vitaliy]

I'm trying to register an Admob account, I enter a phone number for confirmation - it says "Could not send a verification code to this number."

Now it says "Too many attempts to verify the phone number."

I tried to register an account for five different Kazakhstan numbers - it didn’t work.

On two other accounts, an AdMob was created - and with it two new Adsense accounts.
Is it possible to link an existing verified Adsense to one of these AdMob accounts?