Big Sur 11.1 Does Not Detect Zumo XT

I have gone through the steps in the post at the top of this forum. However there are two issues: First, I am not getting a message from basecamp that my device is not recognized as shown in the article before step 1. The device is simply not detected at all. Second, in system preferences>security & privacy>files & folders, basecamp is no listed in the apps.  I can not add the app either as the + button is greyed out (I have unlocked the dialog box to make changes so that is not the issue). Also note that express running on the same mac connects to the zumo xt just fine with no issues.