After joining xbox comunity Minecraft does not start

Is the Xbox app downloaded on the mobile devices?

Yes - it is downloaded. I logged. and logged out to the accounts and deleted and installed the app again.

UPDATE: After further investigation the issue occurs when two or more players are in the same world. That is, when I join my world and play single player everything functions as normal. However, only when additional players join the world does the issue
start. It does not matter who created the world or whether the world is newly created or an existing one. While I tried uninstalling Minecraft from the Xbox and installing again, the problem persists.

Yes i did join the minecraft beta and i notice i couldn’t join my friends so i unsubscribed to the beta unistalled minecraft then when i tried installing it back i had issues which leads me to where im at now

Ah, thanks for that info.

This is almost certainly the cause of the issue.

Please read, start to end, and then follow start to end the following guide, from Minecraft support:

https://feedback.minecraft.net/hc/en-us/articles/360004438671-How-to-Join-and-leave-the-Minecraft-Beta

So, to try to reset your game/account, follow start to end that guide. Join again, to make sure it is recognised, and then follow that guide to Leave after that, with restarts of the Xbox in between steps to make sure it "sticks".

There is a section on what to do if you get stuck in the beta also at the bottom.

And please reply back after that and let me know how it goes

hello interested in joining iam very active on bo3 .fed up of being a stone kicker as no one seems to comunicate on xbox one, pls help i got no friends