Can't signup windows phone beta applications because my microsoft account is invalid

[Botan-Nabe]

I tried to signed up for cPlayer and Digitally Imported beta in the past and they said my email address is invalid.
Strange, i use this email address for Xbox Live and Windows Store downloads?
I really want to sign up for Dragon Blade 2 Beta for WP7/8 but I have this email problem.

If anyone uses Microsoft Support, when it asks for contract email address. using my main email address will make the site say this email address is invalid.

 

[Botan-Nabe]

Bump, from my research, the email wasn't suppose to exist because the format of my email which is k****6*-@hotmail.com (I left asterisks in this post because the world doesn't need to know my work email address)
Some shopping sites also claims my email doesn't exist.
Oh well it looks like I'll need to migrate my email to my new outlook and buy new Windows Phone because I'm not hard resetting my phone