Soft Locked on a Mission

I was going through the game and having actually a really good time with friends, recently as of a few days ago I completed the mission where you fist get introduced to flying and diving which I completed. After completing it, my screen shows I have it checked off and crossed off but it won’t allow me to progress. Granted I have just been doing challenges and opening the boxes I have available but I have no real purpose to keep playing now that I have all the boxes completed for what I have unlocked. I feel like I’ve tried everything and it sucks not being able to play more.