there are many reasons why this error appears:
- You have to disable any AdBlocker or something similar to this
- Your E-Mail adress have to be confirmed
- You have to register a NEW account for Bananatic. So dont use any Accounts, that you used to play before you registered it at Bananatic.
more reasons can be found here:
If nothing helps you, please write a Support Ticket. There you'll get some more informations.