I installed a trial of Drone2Map for ArcGIS 18.104.22.168 and processed some imagery I took using a Phantom 3. No issues processing the data. When I try to use the Calculate Volume I receive a warning that ArcGIS Pro 1.3 or greater be installed. I have ArcGIS Pro 2.3.2 installed and 3D Analyst is authorized. Is there an additional step in Drone2Map that needs to be changed to recognize ArcGIS Pro?
How are ArcGIS Pro 2.3.2 and 3D Analyst licensed? Is it a Named User license? And are you logged into the same organization in Drone2Map?
To check the license settings in ArcGIS Pro, open ArcGIS Pro and click Settings in the bottom left-hand corner. Click Licensing in the left hand pane.