How Do I Enable Pinetrest On My Member Page?

Hi Guys! I am an artist and I have a question when people and myself have clicked on the Pinetrest button on my page - another great social media marketing tool for us artists- a pop up comes up that says "This artist does not want you sharing this image on Pinterest." I have a Premium account so I assume I have full use of the site. How do I enable Pinetrest on my Fine Art America site/page? My Twitter/Facebook buttons work perfectly fine. Thanks for your help!!