So, I've been trying to buy a number of games from the winter sale for the past day...but every time I click "pay with ____," whether that's Paypal or my credit card, it just loads the front page of the website instead of taking me to a page to pay. I've tried doing it in another browser, I've tried logging out and paying for the games incognito in case it was an account issue. Nada. I'm starting to get worried I'll miss all the discounts.
EDIT: To be clear, this isn't happening with one game or one developer, it's happening with every game I try to pay for across multiple developers.