For enhanced security, our online system restricts the association of your PayPal ID with more than a single account. If you are having trouble with your PayPal transactions looping back to the home page, you may have already used your PayPal ID on another account.
This can be fixed by removing the PayPal ID from the other account and adding it to the account you wish to purchase tickets on. If you have a duplicate account, let us know, and we can deactivate it for you.