can not uninstall norton family, says wrong password

i installed norton family recently after  different parental controls, Qustodio, Window family, K9, stopped working after a while.....  it seemed to suit my needs for couple days, alas my kid somehow hacked into it and made it not working again

 

now i want to unistall it and start over, i typed in the same email and passward i use to sign in the family portal, but it says wrong passward/username

 

i looked up this problem  and people started having  this same uninstall problem since 2009 and one remedy is to remove network cable or disconnect wifi,  the reasoning is when there is no internet, there would be way to verify and uninstall would proceed

 

 however I  disabled wifi ,   it still says wrong username/password

 

this is the very first time out of many years of computer use I am not able to uninstall a program, also the first time when uninstall requires  username/PW verification it  fails even when they are the correct

 

 

very fustrating,  Please Help !!!