A friend encounter some issues with how Cura handled the original model while slicing which lead to the printer beating the print off the bed while attempting to print the tall narrow section.
Changes I made are as follows. Removed the HuCard logo. Increased depth of the stand to help with stability. Increased thickness of tall section and angled to correct issue occurring with Cura. Made bottom of cut out at a right angle to the surface the HuCard rest against. This made it so the HuCard will rest on the full bottom of the card than just one edge. Lowered the front section to make more of the HuCard visable.