Can´t change my contact e-mail adress

[sicelx10]

When i want to change my email adress it shows this error:

"Sorry, that email address is not available." I only own 1 registered account.

 

[sicelx10]

I changed my email adress from the community page and it worked, but the problem is that i cant change my email from the Account Settings Options in the Cpanel homepage.