Hi @SINPORTdev ,
The video shows by looking at the lobby you are still running Fortnite Star Wars version Chapter 5 Season 2.
Made lots of Screen video using Mobile phone it was the Star Wars Era
To update to 30.00 on XBL XB One had to uninstall Fortnite the reinstall new Version.
You must uninstall Fortnite on Xbox as described in Youtube video
How to Delete & uninstall Games on Xbox One (Easy Tutorial) (youtube.com)
Now install a new copy of Fortnite from Microsoft Store.
you are still running 29.20 with no possibility of updates. Xbox Store does NOT support a VERIFY option. Just uninstall and Install again.
Uninstall Fortnite reinstall (yes we did it on a second hand Xbox One and it take hours) but the end game is it works.
In the bottom left you will see 31.00 [35447195] Every time the game goes to lobby.
In 31.00 when UEFN connect you get message in the top left saying “UEFN is joining your game”
If you are in game A large blue boxes ask if you want to continue the game and cancel UEFN.
If you agree Fortnite returns you to the lobby and UEFN connects.