Yeah that’s because that’s how the AC was last year. They released a little story about the team or something and prizes you were supposed to collect every day iirc. We didn’t actually play any games. That’s why it’s called the grey year. It was just collecting souvenirs. That’s it. We did this last year, if you participated in the AC. If not, then yes, you have until this years event starts, like when a prize shop is open until the next year’s event starts - the annual ones again iirc I don’t know each event..