It was designed to hold the pot lids as shown in the pictures. The other folks who have printed it do not seem to have had the same problem. Check your printer settings, make sure your filament is dry, and all the other usual suspects for a failed print.
Best of luck.
Clean simple design with enough strength to do the job, though I find the angle and spacing doesn't work too well for my lids and their handles. Holds them up ok but getting them in and out is a hassle as they mostly lean on each other and not the supports. Still, the best design I've found for the task! Thank you!