So you require me (or/and others) to contact you via registred email address.
This required condition opened my eyes that earlier i had a security issue on your site and so perhaps these two things are connected
I shared this issue here with Peeps Place in private message 2 months ago. (i have screenshots on it.)
I recommed all cloudbet customers to turn on 2-Step authentication if they do not want to lose all their funds.
Pfff.. Just change your name and contact them with your registered email. Move on.
If you don't trust them 2-step will not help in any way will it?
It happened to me once that i was logged in into another user's account.
I was logged in while I was idle on the live betting site for some hours and after i refreshed the page i found myself in another user's account .
If this could happen with me then it could happen to everyone and if you have no 2-Step authentication enabled then the other customer can withdraw all your funds.
Cloudbet can detect this via IP addresses, so perhaps they already know about it, but of course they wont publish this security issue. (cookie or else i do not know)