Anychance to update/change the submission format for this exercice ?
I saw some exercices (like the house, low poly room etc) allow image upload rather than others need to have the model uploaded on sketchfab to be submitted which is restricting with the one model / month policy of sketchfab.
What about having the image drag & drop field in addition of the sketchfab one and accept the submission as long as one is filled?