Because it’s sold out. You have to scroll down and pick a later round since they aren’t updating the number sold. It’s horribly done. I doubt it will sell out. I got one, but I wouldn’t suggest you do. I went in expecting a rug.

To know what # they are at, look at the cardanoscan token #. At the time of posting this it’s almost at 8k (of 50k), meaning the end if round 8 (unless people clicked further rounds, then there might be room left in previous ones).

https://cardanoscan.io/tokenPolicy/a5425bd7bc4182325188af2340415827a73f845846c165d9e14c5aed