Your account information, such as statistics or previous purchases, is directly linked to your email address and cannot be transferred. This is why it will not be possible to change the email address you used to create your account.
Please note that the game will take any email address you enter as valid when registering. For this reason, we recommend that you check that your email address was entered correctly when you create your account.
If the email is no longer valid, you will still be able to log in, as we will be able to help you reset your password manually. To do so, you can contact us here.
We invite you to visit the article: Can I set or change my password?