can not buy from marketplace

[Elvis]

the problem for me is I can not buy anything from marketplace. the other functions work perfectly fine but just the "Buy". so basically I can not search item, but I can type on the search bar. then enter without any result. I can not click those category keys on left side. I can still pick an item and do "search marketplace". it did come out 1 page of results because I can not click "Next", but I can not buy them. It just be selected when I click on it. It used to be a small window pops up when u click the item. 

[Poochyena]

For me it's after i've been logged in for anywhere over an hour the marketplace becomes unavailable making it so i have to log completely out and back in if i want to access it. Please fix this NC

[lunaray]

same here. i get the screen. cant buy anything. when i try to go back to the market place. its a blank screen. started yesterday after update.