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I formated my PC and when i logged in Firefox account, it just LOST all my old sync data

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I always used firefox sync and it always worked, but yesterday when i formatted my pc and logged into sync hoping to get my data back, it just brought me an empty profile. Now when i loggin it brings just data about the extensions i installed today Please i don't know what to do my data was all there.

I always used firefox sync and it always worked, but yesterday when i formatted my pc and logged into sync hoping to get my data back, it just brought me an empty profile. Now when i loggin it brings just data about the extensions i installed today Please i don't know what to do my data was all there.

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i just want to recover my old sync from january 5