That's something which is new at the Add-ons website. When I logged in on Tuesday or Wednesday I didn't get the 'suggestion' to upgrade to a Firefox Account. ''I have been bitchin' about that website not upgrading to using the Persona login system (Browser ID) for almost 5 years, and now that Mozilla is dumping Persona, probably due to lack of users, they decide to convert the Add-ons website to use Firefox Accounts. - http://identity.mozilla.com/post/7616727542/introducing-browserid-a-better-way-to-sign-in - https://login.persona.org/ '' ---------------- Didn't the '''Skip''' hyperlink appear for you? I was able to "login" to the Add-ons website using my existing credentials for that website via that '''Skip''' hyperlink. I can't exactly duplicate what you are running into - I didn't get an error like that - I used the "Log in" button at the top and the page that loaded recognized my Firefox Account automatically and auto-filled the UN&PW. It may have recognized a cookie for the Firefox Account - but I'm not sure that is why. As far as converting your Add-ons website account to a Firefox Account, you might try setting up a Firefox Account first here: https://accounts.firefox.com/signup And then go to the Add-ons website and use "log in" at the top of the page, and then "upgrade" from there using that new Firefox Account.