I checked with a friend. When they bought credits, they got an email receipt. Seems like credits would show up in the UI somewhere. But I did ask claude how to talk to a human at anthropic and it gave me an answer, so maybe it applied the payment to credits and the UI just doesn't show they're there.
I'm guessing you bought $20 of API credits, plus tax.
I checked with a friend. When they bought credits, they got an email receipt. Seems like credits would show up in the UI somewhere. But I did ask claude how to talk to a human at anthropic and it gave me an answer, so maybe it applied the payment to credits and the UI just doesn't show they're there.