I have the early access boxed edition of the game and it was all working fine, Until this message popped up, How do I fix it?
Looks like an older version of the launcher. If it's not self-updating, try getting the latest version manually. https://store.uberent.com/Download/Install?titleId=4
Yeah I have the boxed edition though so will it just update on my account or will I have to renew the disk.
It doesn't matter how or where you bought the game. They gamekey you got registered to your Uber account will let you get the newer UberLauncher and it will happily update the game for you.
Unfortunately because the Launcher itself has been updated since the disc was made, you may need to uninstall your current Launcher, then download the latest Launcher here: https://store.uberent.com/download/pa As the game gets updated, you'll be able to download through the latest launcher just fine.