Right password but can’t login my Facebook and Instagram account in ipad

This is the notification you get when the password is incorrect. Are you sure that you are entering the password correctly. If you are sure that you are entering it correctly and you haven't changed it (could still be able to log in on other devices because if it's been changed they don't always get logged out) then this is something you'll need to get in contact with Facebook about.

Facebook is a 3rd party app and Apple cannot help you with password support for 3rd party apps.

i connot login with my ipad can you help me