Having trouble joining only one world

I made a world on my iPad (bedrock edition) and went to sleep in game then turned off my device. Now when I join the specific world, I load in for a few seconds, then a quick picture of my Minecraft homepage then closes out of the app. I'm able to join my other worlds but I worked on this world a lot and am hoping to be able to fix it please help ***IM NOT SURE WHAT VERSION/AFFECT IS (information- bedrock edition, on ipad, 1.16,mobile