Friends can’t join my online world

I play on Minecraft mobile and I've been playing in my world with my friends for about a week. Then my friend lagged as well as me and her game crashed. After that none of my friends are able to join. I tried seeing if my multiplayer mode got turned off which it wasn't in the home screen setting but when I was in the actual game it was off, it wouldn't let me switch it back on. I already have it updated but for some reason my version say 1.14.60.