I installed the health check plugin. Here’s a video showing how it’s behaving (still not working) with Astrid Pro theme enabled. Other themes I tried don’t allow the gallery to load at all.
No, it’s not fixed yet. Images are loading at warp-speed, one on top of the other and the entire gallery section is overlapping another section of my page so it looks terrible (Chrome and Safari on mac). I’ll install the health-check plug in and see if it helps.