Medical Business Cards rejected... any suggestions ?

My flat design business cards were rejected. I had included 2 front and 1 back PSD design on 4 different colour combinations, fully editable (small icons inlcuded), revolving around the medical/cardiologist theme. I had no trouble selling my designs in real life, so I would appreciate if there was some information about the details behind the rejection -that’s pretty much why I’m posting it here too. Thanks for the feedback and suggestions.

Edit; deleted (no answers)