Please provide a public link (no password) that we can check out. '''No Personal Information Please ! ''' Make sure you are not blocking content. https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop also see https://blog.mozilla.org/security/2021/03/23/introducing-smartblock/ https://support.mozilla.org/en-US/kb/smartblock-enhanced-tracking-protection --------------- [https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode Diagnose Firefox issues using Troubleshoot(Safe) Mode] {web link} A small dialog should appear. Click '''Start In Troubleshoot(Safe) Mode''' (not Refresh). Is the problem still there? Many site issues can be caused by corrupt cookies or cache. '''Warning ! ! ''' This will log you out of sites you're logged in to. You may also lose any settings for that website. * [https://support.mozilla.org/en-US/kb/delete-cookies-remove-info-websites-stored Delete cookies to remove the information websites have stored on your computer] {web link} * [https://support.mozilla.org/en-US/kb/how-clear-firefox-cache How to clear the Firefox cache] {web link}

https://support.mozilla.org/en-US/kb/fix-problems-images-not-show http://kb.mozillazine.org/Images_or_animations_do_not_load https://support.mozilla.org/en-US/kb/fix-video-audio-problems-firefox-windows https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues https://support.mozilla.org/en-US/kb/html5-audio-and-video-firefox https://support.mozilla.org/en-US/kb/troubleshoot-issues-with-plugins-fix-problems https://support.mozilla.org/en-US/kb/warning-unresponsive-plugin

If this is about DRM protected content, make sure you have the latest Widevine version (4.10.2391.0). *Tools -> Add-ons -> Plugins You can toggle DRM off/on to see if that makes Firefox (re)load DRM components. *Settings -> General: Play DRM *https://support.mozilla.org/en-US/kb/enable-drm You can possibly check the XHR requests in the Browser Console if this doesn't work. *https://developer.mozilla.org/en-US/docs/Tools/Browser_Console You can check the Web Console for media related messages. *"3-bar" menu button -> Web Developer or Tools -> Browser Tools -> Web Developer Tools *https://developer.mozilla.org/en-US/docs/Tools/Web_Console