I am trying to install Flash Player on my iMac. I am asked for my user name and password. It wouldn't accept them. I reset my password and Adobe confirmed it by email. The download still will not accept my info and I cannot proceed with the download.

I am trying to install Flash Player on my iMac. I am asked for my user name and password. It wouldn't accept them. I reset my password and Adobe confirmed it by email. The download still will not accept my info and I cannot proceed with the download. What now?