Blocked android through google account for the sake of the test. How to unlock?

Question

Google

I went to the Play Market from a PC and blocked the phone. Now every boot the phone shows a "return the phone" reminder, which I set myself. It is easy to remove it - the "home" button solves everything (custom firmware + custom lockscreen make themselves felt), but when you reboot it appears again, which is a little annoying.

You can see the "unlock" icon in the middle but don't click	After pressing "Back" or "Home" remains in the tray:

Answer 1

This is a bunch: DeviceID + Google
Respectively, there are only two options:
1. Either this is a question to change one of the parameters
2. Or contacting the Google TP

Answer 2

Can't you unlock it back from PC?

Answer 3

During the blocking, you had to provide a blocking password. And then picking up the phone - enter it. If not, then you already entered this password on your phone, but successfully forgot it. Write to google.