When you make a purchase in the app, the tokens should be added instantly. However, if there's a delay, try the following steps:
Exit the app and kill it from the recently used applications.
Open the App again.
The purchased tokens should be automatically added to your account.
Note: If following the above steps doesn't resolve the issue, please contact the Customer Support Team with attaching the purchase receipt containing the receipt number starting with GPA. This information will help track and add the purchased tokens to your account.