Could you update to the current Firefox 102.10.0 release? Firefox 102.10.0 ESR: *https://www.mozilla.org/en-US/firefox/all/#product-desktop-esr *https://www.mozilla.org/en-US/firefox/102.10.0/releasenotes/ ---- You can check the Web Console (Tools -> Web Developer) for messages about blocked content and about the presence of mixed or unsafe content. *https://firefox-source-docs.mozilla.org/devtools-user/web_console/ You can check the Network Monitor to see if content is blocked or otherwise fails to load. *https://firefox-source-docs.mozilla.org/devtools-user/network_monitor/ If necessary use "Ctrl+F5" or "Ctrl+Shift+R" (Mac: Command+Shift+R) to reload the page and bypass the cache to generate a fresh log.