I can't delete my account
There's no need to delete your account if you just want to get rid of your data on one of the Yandex services: you can do this in your account settings. For more information, see Delete data. You can delete unwanted photos, clear your spam folder, or change the answer to a security question that you've forgotten using the service that stores this data. To find a solution to your problem, visit the help page of the corresponding service. All services are listed on the main Help pagemain Help page.
Go to Delete Account on the page containing your personal info to completely delete your account. You'll have to confirm the action with a code sent to your mobile phone or email address.
If you didn't link either an alternate email address or the phone number, you'll have to answer the security question. If you don't remember this answer, follow the instructions on the I forgot the answer to my security question page.