Tickets are always accumulated as rewards for completing activities. It cannot be disabled, but you can prevent them from being spent.
To disable Ticket Spending:
- Select the Gear icon at the top of your screen.
- Select the Parent icon.
- Select the Settings panel.
- Select a Child Profile or All Profiles.
- Select Permissions.
- Mobile device users, tap the arrow to the left of the General title.
- Toggle the Spending Tickets button off.
Your changes will be saved automatically, and all purchase attempts will be password-blocked in the Shopping Center.