RIOT POINTS BUYING SCREEN

I was trying to buy riot points when a match I was queeing for, started. When the match ended I clicked again at the riot points button and it shows up this screen. I was in the middle of the process of paying when the match started, but as I was paying with PIX (Brazilian Paypal) i didnt had time to submit the payment method so I didnt lost any money. Riot sent an email saying the time for paying was expired.