Your More System Details doesn't show Adobe Flash as being installed! Did you install the Plugin version of Flash? Or did you just update the ActiveX version of Flash which is used only by Internet Explorer?

https://support.mozilla.org/en-US/kb/install-flash-plugin-view-videos-animations-games#w_installing-the-flash-plugin-manually

You can also check on the about:addons page if the Flash plugin in enabled.

• Firefox/Tools > Add-ons > Extensions

You can get a possibly colored Lego icon on the left end of the location bar that indicates that Firefox is blocking a plugin.

• https://support.mozilla.org/kb/why-do-i-have-click-activate-plugins
• http://kb.mozillazine.org/Issues_related_to_plugins#Click_to_Play

Thank you for your support. My issue is resolved. I have not used this support forum before; FF is great!!