Cant login into xbox account in minecraft.

Hello.So the problem is,i downloaded minecraft from a website called apksum.As i installed minecraft,i opened it and signed in my xbox account.After playing for an hour,i closed minecraft.The second time i opened it,it told me to sign in again.FYI,this is the beta version.So i tried to sign in but it wont work.It said login failed.Can you do something about it?I hope you do.One more issue,i joined minecraft beta,but after i decied to leave,im still stuck in beta.I did everything i could,but it still wont work.I hope you can do something about these issues.The minecraft im using is Minecraft Android.