Wayward Buy Buttons!?

Using Wordpress, with my own theme and 'shadowbox'. Installed the plugin and entered the code etc. Uploaded a sample picture to test, and while the shadowbox pops up correctly, with the sale links, I also have 'sale links' in the "caption" of the smaller picture on the site (cf attached). I can get rid of them by choosing 'No Toolbar,' but I now have two versions of each picture in my "Photos" section on fotomoto, which will get confusing oncve I really use this.

What am I doing wrong?
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