How many times can I request for 2FA OTP? July 07, 2022 08:06 Updated There is no limit to the number of times you can request for it. Related articles I did not receive the two-factor authentication (2FA) email. What should I do? How many times can I try to enter the 2FA OTP before being locked out? How long is the OTP valid for? Can I request a refund for an order that I have not collected using McDonald’s App?