Firefox 98.0 don't syncrhonise or save password

I have a dual boot windows10 - Ubuntu 20.04 with Firefox in each. I want to synchronise my logins and password from window but it doesn't work in Ubuntu side. There is more : Ubuntu Firefox don't save any login or password. The odd thing is that it ask me if I want to save them ...

what I've done so far :

-Check the parameters (allow to save). -Export/import csv => error : "one field is missing" -Synchronize manually one thousand times. -Log out - log in from my firefox count. Uninstalf - install firefox.

What did I miss ?

Thanks for your help.

Have nice day.

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