|I don't think you jumped the gun, but it might be a while till the Mavic 3 classic becomes fully supported. It looks like you can still fly the drone you have with the DJI app and upload the pictures so DroneDeploy can process them. |
This was taken from that site:
"Supported Drones - Flight + Processing
Below we've listed the drone type, whether it's supported for flight, processing, or both, and the mobile compatibility. Drones listed as supported for processing only cannot be flown autonomously in the app, however, you can still upload and process imagery and data collected on these models. For more information on data processing, visit this page."
I've never used their stand counting, so I can't offer any advice/tips on how to run it but somebody else on Drone Talk can. Good luck!