Accounts that have been deactivated can be reactivated after 48 hours, up until 21 days after the initial deactivation. You may use this option by going to your settings. Please keep in mind that once your account has passed the 21-day self-reactivation period, it cannot be reactivation.
DeviantART Deactivation and Reactivation
Do I have deactivate my account?!
You won’t be able to reactivate your account. You will have 30 days to cancel your account deletion, after which you will no longer be able to access your account or retrieve any information from it. Your profile, photos, movies, and other data you’ve stored will be permanently erased.
You may still access your notes and settings after your account has been disabled. You can not, however, send any more Notices or create any new Deviations.
To put it another way, if you wish to make a DeviantART account that has the same email address as your existing Yandex.ru account, follow these steps: It may be easier than you think.
Accounts that have been deactivated may be reactivated within 30 days of their deactivation by using the account username (or email address) and password on twitter.com or through your Twitter for iOS or Android app. Read further details about how to re-activate your account.
Depending on the severity of the infraction, this sanction might last anywhere from 12 hours to 7 days.
If you believe your account was erroneously banned, you may be able to reactivate it. Take actions to unsuspend your account. If you log in and are prompted to provide your phone number or confirm your email address, follow the on-screen instructions to have your account reinstated.