With the release of macOS Sonoma 14.4, the Hub interface seems to have been set up a bit differently in how USB devices work and are connected to the operating system. This also seems to be related specifically to MacBooks, but if you are using a Mac device other than a MacBook, the solution below will get you up and running.
You will need to do the following;
Remove the currently installed Xencelabs driver.
Use Go or Finder to navigate to the Application folder > open Xencelabs and select the uninstall Xencelabs application.
Use the link below to download and install Xencelabs driver 1.3.2-62
Then restart your Mac. This is a must
Once your Mac has restarted, you will be up and running.
Link to Apple Community: https://discussions.apple.com/thread/255518397?sortBy=best
If you continue to have issues, please reach out to Xencelabs customer care by emailing CustomerCare@Xencelabs.com.