If you can't open the Facebook app on your phone I suggest that you try to clear data for it and restart your phone. Go to settings > app > Facebook > clear data. Restart the phone and try to open it again. Also make sure that you have the latest update for Facebook installed from Google Play.
I cleared data and made restart ,,, but still the same thing ,,, its refuse to open , only usual message that password incorrect , but i'm sure password is correct . Any other advice please ?
It would be worthwhile logging into Facebook on a PC and trying to reset the password to see if this helps.
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