Stuck at “load more”

Hi, plugin gets infinite load when “load more” button is pressed. I noticed it since servers switched to newest php, so it might be the reason. Scroll load has the same result. Next page option reloads the entire web page not just the gallery, so it’s not convenient.
Please tel me how can I fix it, or if there will be an update. I use pro version. Thank You!

– Web page with gallery – https://mojerazglednice.com/2020/07/31/baska-plaza-snova-otok-krk/

The page I need help with: [log in to see the link]