Clear the Google Play cache:
- Open Settings app on your device
- Tap Apps
- Select Google Play
- Tap Clear cache
If this doesn't help, try the following:
- Open Settings app on your device
- Tap Apps
- Select Google Play
- Tap Uninstall updates
- Open Google Play and log into your Google account
- Try to make a purchase
Tried all of the above steps and still cannot make a purchase? Please contact us at https://plrm.me/arena_support. We'll do our best to help you.