What if I do not have an email address? July 07, 2022 08:02 Updated You will need a valid email address to use the McDonald's App. Related articles I am having issues registering. Why is this so? How fast will I be able to receive the OTP via email? I’m already a McDonald’s® App user. Why do I still have to authenticate myself with 2FA? Can I reset/deactivate my account? How long is the OTP valid for?