tmi warning cup wont seal

A

hi all I have used menstrual cups for a year now. I recently got a new Lily cup and it was doing wonders until this morning. I went to empty and wash it and I tried putting it back in. no matter what I do it won't seal today. I spent 45min trying to get it to work properly. please advice? I've tried pulling it out some it just won't unfold or seal.