I've made a mistake that is entering @gmil.com instead of @gmail.com
How can i revoke this access and gain it again with correct E-Mail address?
I see that your True Key product has 5 licenses, which means you can register 5 different e-mail address with your True Key subscription. You can create a new profile with True Key under your gmail.com e-mail address and then use the activation code to move to Premium subscription.
After you create the a new profile, follow the steps under Solution in the link https://service.mcafee.com/webcenter/portal/cp/home/articleview?locale=en-US&articleId=TS102501
If you would like to delete the account under incorrect e-mail address that you have created, you can contact support from https://service.mcafee.com/webcenter/portal/cp/home/contact?