I love the Gallery Master but ever since updating to WP 5.5, I can’t add new pictures to it! The error message is “Your browser doesn”t have Flash, Silverlight or HTML5 support.”, but I do have Silverlight. I tried the “Uploads Thumbnail” button but that does nothing when I click on it. Please help — thank you very much

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