You can! Bonus tickets are issued just one time, and are only good for one week but you can choose to spread them out.
You can change your settings and choose how many of your bonus tickets you want to apply or roll over into the next week's contest instead of using all of them in the following week. To do this, follow these steps in the app:
Tap "Settings" (the gear icon furthest to the right).
Select "Bonus Tickets".
Tap the toggle to enable bonus ticket allocation.
Enter the number of tickets you want to deploy each week.
Tap the "Save" button.
The popup window confirms that your settings were updated. Tap "OK".
To disable bonus ticket allocation and use all of your bonus tickets for the next week's contest, navigate back to the "Bonus Tickets" screen and tap the toggle to disable ticket allocation. If the "Choose bonus ticket allocation" toggle is unselected, we will apply all of your bonus tickets each week.
If you'd like to keep all of your bonus tickets indefinitely, then adjust your ticket allocation settings to deploy zero tickets and save. Your bonus tickets will keep accruing until you update your settings again to use them.
NOTE: This function only applies to bonus tickets. You can't do this with recurring tickets from deposits.