stuck in the air

Hello, I've been playing in a fave world of mine. I purchased the plastic texture pack. I played with it several times. Last week after playing for an hour, I exited the game and came back later on. The screen was dark. figured it was night and I got lost. After the sun came up, I realized I was in the sky over a cloud. I switched to creative, so if I fell I wouldn't die as I was on a small island in the ocean near a water temple. I can fly up, side to side and down only 2 blocks below a cloud. I uninstalled everything, cleaned my phone, reinstalled the game only, not the plastic texture. I reset to default-still no change. I had tried switching between classic and pocket UI, because of the chest issue. That made my game very glitchy and almost unplayable.

I am stuck in the air and can't do anything. Any suggestions wild be greatly appreciated. This is the only affected world. All my other worlds are fine.

Thanks