Guys I need help.

I wanted to buy the new Steam Deck OLED 1TB model but steam doesent let me.
It just tells me i need to join the waiting list but doesent tell me how.
With the 512gb model it lets me buy it like its suposed to.

I have searched around a bit and everywhere it says i have to “buy” it to get on the waiting list but the button is not working.

Thanks for the help in advance.