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I've succesful login in old sync, but nothing synching,New Sync says unknown account on Login. How can i get my data back?

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Actually I couldn't use internet for approx 1 year. I thought My every detail is safe on FF server Now. when I am trying to sync my details in old sync, in first few attempt it can't login, but eventually it successfully logs in. but nothing is synching. So tried the same thing in New Synch. but When I try to login with same details It says unknown account. So I thought making new account with same id would overwrite data with new one. so I didn't. If there is any way I can get my data back, atleast some of it. As its quite important.

Actually I couldn't use internet for approx 1 year. I thought My every detail is safe on FF server Now. when I am trying to sync my details in old sync, in first few attempt it can't login, but eventually it successfully logs in. but nothing is synching. So tried the same thing in New Synch. but When I try to login with same details It says unknown account. So I thought making new account with same id would overwrite data with new one. so I didn't. If there is any way I can get my data back, atleast some of it. As its quite important.

All Replies (3)

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Sync wasn't intended to be long term storage for user data. Where is your year old-plus device? It should still have your Firefox data.

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I am still using the same Laptop, But due to some reasons I had to format it few times. I thought I had the my data safe with firefox. So is there no way... ????

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It's "safe" when you use it as intended, for synchronizing Firefox data between multiple devices. Sync was not intended to be used as you tried to use it; as a backup medium or "cloud".