I've been using Pocket for many years as my primary method of saving bookmarks. When Firefox upgraded to v57 my entire list of Pocket bookmarks/websites disappeared. I have the Pocket icon in the address bar but none of my saved bookmarks. I've tried logging in to Pocket but none of my email accounts or user names is recognized and I don't remember ever having to log in to Pocket previously. Please, how do I recover all of my previously saved Pocket bookmarks?