Hello. My name is***** am a computer professional with over 15 years of experience with both Mac and Windows. I am sorry that you having such a frustrating experience. I would be happy to help you with this. What particular passwords are you having trouble with? Email passwords or website logon passwords, etc?
The fastest and easiest way for me to resolve this would be for me to remotely connect to your computer so I can see exactly what is going on and work on fixing it while you watch. Would you be ok with that?