FC 26 Closed beta code invalid

EA folks,

   I received an email with a FC 26 closed beta code for the Nintendo Switch. After inputting the code in the eShop, it states that an error has occurred and to try again later. I have restarted the eShop and the console and it doesn't work. After using the code help tool the system says the code is invalid. I have not validated the code before so I don't know why it is being called invalid. Was I sent a fake email? The email address reads as mailto:EA@e.ea.com. Please advise on way ahead. If required, I can forward you the email I received.

Thanks!