Screwed out of my last spin. Had to wait 1.5 minutes till me next spin, with around 4 minutes remaining until the end, I decide to reload the app to prevent crashing while spinning. So I come back into the game, less than two minutes after seeing the countdown at 4 minutes and the wheel is gone. According to the timer I saw it should still be here while typing this
Edit: The Hypnosis dragon is still in the market