This could be a great opportunity to resubscribe directly with The 4 Blades! We highly recommend this option.
If you would like to continue to be billed directly by Android, you can follow the instructions to update your payment details here: https://support.google.com/googleplay/answer/4646404
After updating your payment details with Android, you are free to subscribe again through your app.
Please note, however, that due to privacy restrictions we are not able to see the purchases you make via the app and therefore cannot add them to your web account without you sending us your purchase receipt.