unblock

See these possibilities. Post back if you have questions about them.

'Your account has been disabled in the App Store and iTunes' https://support.apple.com/en-us/HT208856

If your Apple ID is locked or disabled https://support.apple.com/en-us/HT204106 

If you forgot the passcode for your iPhone, or your iPhone is disabled https://support.apple.com/en-us/HT204306

Turn off Activation Lock https://support.apple.com/en-us/HT201441

If the above doesn't work, how is it blocked?