If your payment isn't going through successfully, here are some steps to check:
Note: If you’re subscribing to Premium with through Google’s Play Store or Apple’s App Store, you can contact either of these companies for information about your payments.
1: Has the card expired or been cancelled?
Contact your bank or credit card company for further details or to request a new card. Then try signing up again with the updated payment details.
2: Have you entered all the correct details?
Make sure you enter your details correctly, particularly the 3-digit number sequence on the back of your card (the CVV/CVC security code). Also check whether you have the available funds :)
3: Is your card enabled for foreign purchases, and online and recurring transactions?
You can contact your bank or credit company to check this. You may also need to have your card set up for 3D Secure online transactions. Examples include “Verified by Visa” and “Mastercard SecureCode”.
If you've checked all of these steps and your payment still isn't going through, please contact us at firstname.lastname@example.org.