Gitlab not send verification code on yandex email

Hello.
My friend uses the online version of Gitlab and when logging in to the site, the verification code is sent by email.

For some time (probably more than a month), a verification letter has not been sent to his email. We don’t know why this is happening, but the email is in the domain yandex.ru (maybe this is due to some kind of sanctions? just a hypothesis)
Naturally, we looked at the emails in the Spam folder and there were no emails from Gitlab.

He sent a report ticket through a form on the gitlab website and an email came to his email with a text stating that the application was accepted for work. Ticket number 511665

This problem is very strange.
We don’t know if tech support is dealing with this problem, because my other one is a regular free user.
Therefore, we decided to remind you about the problem here.