Hi, welcome to justanswer.com! My name is Mike.I am going over your question and I will be with you shortly.
Who is your email provider?
Please stay on this question do not start a new one.
What do you mean by "blocked" can you clarify?
Your computer is very old and Mail is probably not compatable with the new gmail.... Did you try accessing in your email using your web browser? Click here and sign in: gmail.com
I can connect by remote and help you too...
Did you try that?