I just upgraded to a new Samsung A8, it died for the first time and it's asking for a password which needs 4 characters and one letter. I made pin password to back up my fingerprint but it's not working. I have't made any other password so I don't know what this could be. Is there another way to avoid this part so I can either use the fingerprint or face recgoniztion? If not, what do I need to do!!??