Drivemob is missing from your box.  In most cases this can happen on the White softbox Go or the Black Softbox Go.

Try first looking  for it by going to Settings/Apps.  If you dont see Drivemob or Box X 2, then you will need to reinstall it Box X.

To do this go here and find the correct Device and watch the video on how to reinstall Box X.  https://boxhelpers.com/box-x-anywhere/    Then You will be able to open Box X and then in Box X install Drivemob Pro back on your device: