A couple of questions: (1) When you say the top right corner, do you mean on Firefox's toolbar or main menu (current Firefox Account name) or within a web page you are showing in the tab (for example, on Google)? (2) Do you share your computer with anyone, or have you allowed anyone remote access to your computer? ---- If your Firefox seems to be missing data that you were using recently, here's what I suggest: (A) If Windows crashed or Firefox updated between the time you had your data and now, close out of Firefox and do a normal Windows shutdown/restart to complete any pending updates and release any file locks. (B) If Firefox again starts up without your data, check whether your stuff is available in a different profile, as follows: '''Profile Manager Page''' Inside Firefox, type or paste '''about:profiles''' in the address bar and press Enter/Return to load it. This page should list at least one profile and could list many. (Each profile has two folders and one or more buttons. Do not use any Remove buttons!) The profile that Firefox is currently using will have this: '''This is the profile in use and it cannot be deleted.''' Do you have any other profile(s) listed on this page? If so, you can check whether it is the one you were using recently by clicking its '''Launch profile in new browser''' button. If it isn't what you want, simply close that new window. If it IS what you want, back on the about:profiles page, click the '''Set as default profile''' button for that profile so Firefox uses it automatically at the next startup. Any progress so far?