I’ve been exporting stl’s the same way since I’ve been using this app. Today the file shows up as an error on my MacBook and cannot open file to 3d print. Unsure of where to go from here.
Process: I complete the design, hit the export button, tap 3d print stl, name the file and save to “files” that saves through iCloud. I then open on MacBook directly into my slicing software.