The question mark is because IIRC in the past they’ve given the date in Japan time without specifying that, which meant the tickets actually went on sale earlier than you’d think in your timezone.
https://l-tike.com/st1/njpwos/sitetop is the link and once the show is added to the list, it’ll have the Japan on sale time listed and you can convert it to your timezone.
by EffingKENTA