The bank canceled the credit card that I used to pay premium now I try to pay with a prepaid card (visa) and it can't be done because always shows "an error has ocurred" 😕
Have you tried to use an incognito tab, clear the cookies of your browser and use another browser or device?
When this doesn't work, you should try to use another internet connection (e.g. cellular data instead of WiFi).
Have a nice day!