Hi! laurajernigan, Thanks for using support forum. First of all I want to know that is your connection speed is good enough? Becasue facebook is a heavy site and sometimes fails to open with slow connection! If your connection is enough then try to clear the cookies and cache! Go to the setting of your Firefox for Android browser then select Privacy and click on clear private data! '''Please Please un-mark all the tabs like History, Downloads. You will lose your all the History if forget to un-mark them and check mark only the Cookies and Cache''' and click on clear data!