How to connect your own domain to firebase hosting? Failed to verify?

Question

Domain Name System

Bought a domain on 2domains.ru. Now I'm trying to connect it to firebase hosting. But I can't confirm that the domain belongs to me.
What am I doing wrong?
1. Just click continue

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2.1. Nothing has changed here if that matters.

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2.2. Enter the copied data and click "Add"

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2.3. As a result, on 2domains.ru it became like this

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3. I click confirm and I get an error

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Answer 1

In the registrar panel, instead of t, you need @.