Hi ​@Vladimir Rebrov, Thanks for reaching out and sending the screenshot.

I've edited the screenshot to hide your account email address to keep your information private. And thanks so much for checking those different spots – we appreciate you being so thorough!

Do you have any other Figma accounts you might have used? If so, could you please double-check that you're logged in with the account that you used to create and work on the file?

This guide explains how to switch between accounts:  Switch between accounts 

If you're already logged into the right account and still can't find the file, please submit a bug report to our support team so we can help you track it down. You can submit a report here

To help us investigate this quickly, please include the following details in your bug report:

• The email address you use for your Figma account
• The URL of the file you're trying to access

Thank you again for your support and cooperation.

After clicking on the link I get an error DNS_PROBE_FINISHED_NXDOMAIN

UPD 
I ended up doing it after I logged out of my account.