Cant buy NX coins on steam.

Hi guys, I've been googling for a while the answer but there was no solution so here am I. Wanted to check prices/buy some NX coins but after I press the button it says that I dont have any and asks me if I want to buy some, I pick confirm and nothig happen. Tried to relogin but problem is still there even after few days, I've been asking people in game so few had same problem but no solution. Any ideas?