All you have to do is wait and not worry. If over time the transaction has not been confirmed and its validity period has expired (2 hours), then you will just need to try to pay for the service again. This happens extremely rarely and in our memory it only happened once or twice.
The main thing in this case is not to worry about any bill, you will not pay twice, and if you do pay, we will see it and return the extra money. Our support service will help you with any questions and will never leave you alone with your problems, since the client’s problems are OUR problems.