You can find Settings under the user icon in the top menu bar. 
Updates your Account to reflect your preferences and relevant information. 
Мои языки
In the Profile tab, select the languages you know. Chosen languages will have priority while displaying the projects’ target languages list. 
Смена пароля
В секции Пароли вы можете изменить текущий пароль.
In case, you were registered via Google, Facebook, or another single sign-on provider, add another way to log in by setting a password to your Crowdin account. 
Удаление аккаунта
For security reasons, we cannot delete an account on behalf of the user. You must have access to the Crowdin account in order to delete it.
To delete your account, follow these steps: 1. Go to the Account Settings. 2. Open the Profile tab. 3. Scroll down and click Remove Account.
Once you remove your account, your projects and account settings are removed permanently and are not recoverable. The translations you made (comments, terms, and votes) stay as they were and appear as added by a Removed User.