My product basically revolves around a particular google cloud platform feature, for which I need to add a billing account. Whenever I go to do that, it doesn't let me add it. What happens is I try signing up for a free trial, but when I tell it to verify my card details and send me an OTP, despite entering the valid OTP it still returns me to the exact same page.
I click the start button:
Then it prompts me to enter my cvv, which I do.
Even after doing all those things, correctly entering everything, including the OTP it sends, I land on the exact same page. There is no option whatsoever to proceed or anything.
Side note, if it helps I'm in India and I'm using a MasterCard
EDIT: I forgot to mention it was actually deducting the balance from my account, but still not letting me proceed