There are numerous reason, situation or circumstances on why you are not able to purchase inside the game. Please check and try the following;
- See if you filled-in all the necessary details for billing.
- Check if you have changed or modified your credit card details. It may take a week to verify the new one.
- Re-log (Log it out then log it in again) your iTunes or Play Store Account.
- Sometimes, restarting the device can help in this issue.
If you are receiving any iTunes or Play Store errors, then we best advise that you contact iTunes and Play Store support instead so they can assist you. If you are unaware on how to contact them then please read our simple guide in the following articles below;