Automating Stripe payment on Discord (Payment processing systems automation question)

Has anyone ever automated payment through payment processing systems?
I am trying to automate buying Nitro on discord and it's been as follows. I can usually get to the 3ds challenge, but after that I get an error like this:

Sometimes this ends up killing the card.
However when I changed to a clean proxy I somehow managed to get 2 accounts or so, so could this be a proxy issue? Anyone have any advice for this?

You using the same proxy over and over again? you may need a farm

User12121 said:

You using the same proxy over and over again? you may need a farm

Click to expand...

That's what we believe to be the issue, but I wonder if there's anything else I should do to make sure the payment passes through.
I do remember that when I had to manually tinker around looking for xpaths and testing commands the success rate was basically 100%, it's just that when it's completely automatic it has this error. So I am assuming there may be a behavioral factor in here?