Poco X3 NFC bootloader unlock

I already have a Mi Account, it is binded successfully to my device and the timer is running.

Only one problem. Every time I open Mi Unlock Tool in my laptop or try to add recovery phone in Settings ➡️ Mi Account ➡️Add Recovery Phone, the same thing happens. And Mi Unlock Tool forces me to add a recovery phone number.

I enter my password, correct pass. I put my number, click submit, and then it starts lagging.

Whether on Mi Unlock Tool or my Poco X3 NFC, the same thing happens when I try to get an OTP. A white square window shows, it's blank and frozen no text, if I press in it, nothing happens. If I press out the window, it disappears.

How can I fix it?