For the past week I've been able to connect to my friends account perfectly well and then last night it stopped working, it will do one of two things:

1. Get stuck on locating server and after a few minutes will say unable to to connect to world
2. get stuck on connecting to world for a shorter amount of time and say unable to connect to world

I've tried troubleshooting for a few hours already and found some guides online but I haven't seen any like mine so far and everything I've tried hasn't seemed to work. I've tried resetting my wifi, uninstalling and reinstalling the app, and restarting my phone many times. I've also tried some other stuff like entering a private world and exiting which one user mentioned, disconnecting my account and connecting it back, and clearing cache.

How should I go about fixing this?