I have deactivated icloud and everything would be fine, but I cannot restore the password because I forgot which date of birth I indicated during registration. I remember the answers to the security questions, but there is no date of birth, I also cannot restore the password via mail, since it turns out that it is also deactivated. How can I reset my password then?
iPhone 5s
Using a web browser if you sign in with Apple ID and password at appleid.apple.com immediately you have to answer for three respective questions .
If you are having incorrect credentials , the only solution is convert this secondary authentication account into two factor authentication .
See the articles Two-factor authentication for Apple ID - Apple Support
Get a verification code and sign in with two-factor authentication - Apple Support
Even if you are using iPhone without knowing correct credentials the Apple ID account can't be accessed , the rescue mail address and password is not known to you , convert the account into 2FA .
I forgot the birthday specified during the icloud registration
