My apologies on this one–the feature has not been removed, but due to some other bugfixes that I implemented in 1.3 and didn’t carry through to the correct place in the post meta class, I apparently broke it in 1.4. I’ve gotten a bit derailed on updating the plugin–1.5 is in the works, but a significant feature for Pinterest is still a bit up in the air.
If you are able/willing/brave enough to try the current develop branch of the plugin, which is pretty stable (I’m mostly at the updating docs stage), you can download it from Github and replace the existing plugin files.
Another option, if you can edit the plugin files, would be to find the scriptless-social-sharing/includes/class-scriptlesssocialsharing-postmeta.php file in the plugin, and comment out the return; at line 30 (in the do_checkbox() method). If you do this, please practice safe coding and back up your files first, and make sure you have a way to delete the plugin if something goes wrong.
Thanks for asking, and I’ll bump this up the priority list to get the issue fixed–it will be taken care of in the next release. My apologies for the inconvenience.
