Please consider turning on send info to Mozilla before posting a question. This helps us help you. As I have no info from your system that would help see things that cause issues. No idea what version Firefox, running on what OS let alone Flash, Video drivers or anything else. Sorry no idea about that google play store app. And no intention of going there. Why not try a Firefox Browser Extension. https://addons.mozilla.org/en-US/firefox/addon/seoquake-seo-extension/ and https://addons.mozilla.org/en-US/firefox/addon/seo-toolbar-13927/ and https://addons.mozilla.org/en-US/firefox/addon/seo-doctor/ Am sure there is more if look for them with search from those pages. Please let us know if this solved your issue or if need further assistance.