[SOLVED]
Clicking on the redeem button on my phone takes me to the game page instead if adding the game to my library or cart.

Anyone else experiencing this issue? I'd submit a ticket, but by the time they get to it, it will be far too late to claim the game.

EDIT: this only affected the claim now button on the Autumn sale promo page. On the GOG main page I was able to claim the game.