And added their inline HTML code in two places on my test page, marked with text: test 9999 and test 00000 so you can find it on the page. <div class="sharethis-inline-share-buttons"></div>
And, no share buttons appear. Nothing. Works on my Weebly site.
Just as a wild test, I also copied the property code into the second iframe before the div tag. Still no buttons.
The ShareThis support has no idea why it is not working on Wix. A Wix problem...