I was able to reproduce that issue on our test servers and our developers will try to fix it as soon as possible.
As a temporary solution, I recommend you to switch popup theme in your gallery to 6 or 8: http://prntscr.com/i72lum
Option «Display only first image» should work properly with that themes.
hello, I’m having the same problem.
Show only first image dosen’t work: on click it opens the popup but shows only one image.
Tried also with enabling «Open by link in popup» but if in the page I link a text (for example text) and I put also the code [supsystic-gallery id=4]: in this case I can see the text linked (if click on it nothing happens) and under the text all the images of the gallery displaied in one column (if I click on one image it opens the popup and works fine)
Hope you can help me to fix this issue because I’m online with my client’s web site.