Cozy Image Gallery

Worked great for years. Suddenly no image galleries are visible, except on one computer where security certificates were set to always trust. Doesn't work on any other computer or smartphone, using several different browsers. Firefox gives security errors. App embed is on. Tried to contact customer support but the support page is broke and won't send messages. So, starting to look at other solutions built into the theme rather than a 3rd party app that kills us. Tried latest versions of Showtime and Pinnacle themes. Oddly the video galleries from dame developer still work, for now.