Disable two-factor authentication
To go back to using a regular password:
Go to the Manage account page.
Under Passwords and authorization, click Login method.
Select a different login method from the list.
On the page that opens, enter a one-time password from Yandex.Key to confirm that you are disabling 2FA.
If the password is entered correctly, you will be able to set a new regular password for your account.
You will need to create new app passwords for third-party apps and mail importers because your old passwords will stop working after you disable 2FA. You can create new ones on the Access management page.