Hi playforfunV, 
I don’t know if you are aware but the ticket system has recently been changed. You can find more info here: Ticket Update.
You can now select which of your valid tickets to use to register for a tournament. :
Unfortunately there is a small glitch as it seems that not all of the valid tickets are listed for some reason.
I know this because in the photo above there should have been three tickets to choose from instead of two.
The tech team is aware of this problem and is working on it.
Hope this helps.
Cheers!