"Limited to only one alternative email" error while changing the email on your Epic Games account
While attempting an email change, you are asked to enter a new email address for your Epic Games account. You will receive a message with a verification link to this new address.
If you receive this error message, you haven't yet verified you have access to the new email address:
To complete your email change request, you need to:
Log into the new email address that you entered, find the verification message, and click on VERIFY YOUR EMAIL. Note: If you click on Resend Email a new verification message will be sent to the same email address.
If you don’t have access to the email address you entered or want to use a different email, click on CANCEL. In the pop-up window, click CONFIRM to cancel the email change.