Putting this in its own topic so I don't have to keep answering this with the same solution every time it comes up. Mods, feel free to sticky this until we're sure that this issue is resolved. If you get a 400 bad request error when logging in to your profile, check the URL of the error page. If it doesn't have https:// at the beginning of the URL, try adding it and you should be able to log in.
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