Unfortunately minecraft has stopped

I downloaded minecraft app and open app, i click play and click my world, my buildings and chests these closed. and my world as lot trees, buildings, city's, towns, more and app still running after minecraft app cant close it, once and downloaded MCPE master and gives enchanted armor and weapons are pro i can attack anything, destroy blocks sometimes.
after lot of lag and my game stops working and says unfortunately minecraft pocket edition has stopped then closes it and need reopen app again, after my version beta together update while mojang can't code it but uses Android studio or something. After says it appears don't have license and click ok and app close again, just i hacked says unfortunately, minecraft has stopped working, this went works a application. and i tired click a several times but minecraft has stopped working and we cant play minecraft my worlds are keep, i didnt open game just black screen lag and pls help me i cant open minecraft. please comment this bug!

They already had free servers for Minecraft Bedrock Edition, but in case, every server requires Xbox Live account by Microsoft; to get achievements and more things safety to make players report them for exploit. Just because why? Markus Persson sold this game to Microsoft, but staff is Jens Bergensten, he's the craziest programmer of Minecraft that you've heard anything before.