Foreign credit card on amazon

I'm using a credit card from my home country to build a PC on Amazon and then make a installment through the bank app. But when making purchases before, I realized amazon charges way too much of you use that currency converter, and since I've used this card on konbinis and markets before and it charged me in yen with no problem, I decided to keep the currency in yen this time. But it's been already one day and I didn't get an order confirmation email, nor a payment declined one, is it normal?

by ColdBelligol