Hi, I can't change my email address in my facebook account to an address with "-" sign. Facebook says that admin(at)kosmetyczka-kluczbork.pl is an incorrect address. Why?
I think you cannot directly change your email address. You can just select one for primary and others for secondary! Again that emails address might have been used for another facebook account. So, check everything you can get.
I can add another address and set it as the primary, but I can not add the address, which I described earlier. I can not also register a new account at this address, and this is a newly established address and for sure he is not yet on facebook.
I think I found the cause. Namely, I can not add any address with the user name admin. Any other address on the domain was approved by facebook. A bit strange, I have never before heard about such thing.
To change your login email address: Open the Account dropdown menu at the top right corner of Facebook and choose Account Settings. Click the Edit link next to Email. Click Add another email. Type your new email address in the open field and click Save Changes. You will be asked to enter your password for security purposes. You will then be sent a confirmation email to the new email address. You will not be able to log in with the new address until it is confirmed.