If you registered, then you have an account on TeamSnap. It's vital that you get your TeamSnap app set up on your phone ASAP. Click the link below for some helpful tips.
How do I know if I registered for and paid for a tournament?
If you can't remember if you have registered and paid for a tournament, just log into TeamSnap and find your "Dashboard". The Dashboard will have a record of every registration you have completed and the payment status.
Here's a link to your TeamSnap dashboard: