Using the Polycam app on the phone I used the AI Capture feature to take a picture of the object I wanted and it will start the 3D model process. After that 3D model was created I clicked on the "Download" icon on the top right letting me to Export that file. In the picture below under "Mesh" sadly behind the pro licensed paying, I would click the STL file there and click the "Export" link down below. If just clicking "Export" alone doesn't work you will have to create an account and use the "Email a link" to download the file.Â