Minecraft 1.13 Command Issue

Hello, HaZe xDriven, I actually experienced the same issue. I fixed it by uninstalling the game and reinstalling and it fixed the bug. Let me know if this works for you. I apologize for the frustration you might be going through, I know it can be a hassle.
Have a lovely day!

Hi Theo,

Thanks for coming to the forums. Were you in the beta at one time? There was an issue with people in the beta getting the 1.13 update. When they should of been in the 1.12. You can post on the
Minecraft forums for additional help on how to get back to the 1.12.

Thanks,

Brad

Hi there Thee Kidd Flash,

Thanks for keeping us updated on the issue with Minecraft Multiplayer feature. I recommend trying the following resource article from Mojang:
How do I play multiplayer?

• Have you tried updating the game to
  Minecraft 1.12.2?

"We are still working on 1.13 so don't worry! It will be out some time in the future. This is a fix for a multiplayer exploit which could not wait until 1.13."

If the issue persists, I recommend reaching out to the game developer to help
report the issue and for further in-game assistance.

Hope this helps.

Minecraft should show it's version on the title screen. Ask your friends what version number is showing on their screen, and compare that to your version.

The current official version from May 23rd is 1.11.4.

The current Beta version is on 1.13.something.

Hello WakelessWolf240,

Thank you for posting on the Xbox forums. We will be locking this thread due to it being revived by a new post. If there are any questions, discussions or issues that anyone would like to bring to our attention, please create a new thread. We will be
more than happy to answer any questions or provide solutions for any issues. Thank you again and happy gaming!