FUTTIES Countdown Evolution

I placed my Flashback CR7 a few weeks ago into the Futties Countdown evolution. I claimed the first step and then when I claimed the second step it said something along the lines of ‘evo has run out of time’ and now my CR7 no longer appears in my active evolutions and is stuck at the second step. The evo still has 4 days until it expires so why has it been removed from my active evolutions? Thanks