Mirror Lockup not working with Canon 5Dmark4

Hi
I downloaded from tethertools the trial version of your smart shooter 4 and seems to working wonderfully, congratulations much better than the Canon EOS utility!

My set up is Canon 5D Mark iV - MacBook Pro (2019) macOS Catalina 10.15.7

My issue
I’m unable to shoot when the Mirror Lockup mode is selected on ON in the camera controls of SS4. As I usually work with mirror lock up it would be essential for for me to be able to use it.

Or is the feature locked in the trial version?