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bad request

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I'm getting bad request error messages when I try to sign into Firefox on my iphone. I would like to sync my iphone browser to my Macbook. Right now I'm not able to sync bookmarks or any customization.

I'm getting bad request error messages when I try to sign into Firefox on my iphone. I would like to sync my iphone browser to my Macbook. Right now I'm not able to sync bookmarks or any customization.

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Hi

What is the exact error message that you are seeing?