tweeksta, you can have an account at each site, and play at all sites, mainly it's about claiming a bonus at each of the sistered sites, some allow you some don't, some have you use the same log-in name.
When you sign up with an email that is identified as having an account with them, they will tell you, log you in and you won't recieve the bonus.
Using different emails with same registering info is what they don't want and is conscidered multiple.
Speak with Gina Bingo's live support, they will let you know if you have other accounts, they either do it by info you have given or can do it by your IP.
If everything is good you should have no problems.
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