Thank you for reaching out to us. We're sorry to hear that you're experiencing difficulties with discovering or adding add-ons.
Could you please provide more details to help resolve this issue? Do you see any error messages? What's happening when you're trying to discover the add-ons? Additionally, let us know which platform and version you are using.
Also, did you try using other suggested browsers (Safari, Microsoft Edge, and Google Chrome) to see if it makes a difference? Try clearing the browser's cache and cookies to check if that helps.