I have a question... All the sudden it kicked me out of a server with my friend and exited me out of..

Close the app completely, and make sure its not running in the background on your device, and make sure to swipe it close on your open / recent apps or to do all if your not sure how to do the other just restart your device completely. After that when you reload the game / start it up it should be fine, and honestly this bug/ glitch can happen a lot, and can beand very annoying but over all nothing to worry or be scared of it just keeps make you start your game over and over this way but good news is it doesn't happen all the time but can do when you at least except it, and can really wear on your nerves some days just once others 5 or more especially if you have limited time for the day or if your friends can't be on long or whatever. I hope this helps if you have more questions let me know =^-^=