Adobe Flash Player (AFP) not working on some websites. Help please?

I am trying to view some websites, but the area turns gray where the interactivity is (where Flash Player is needed). I uninstalled everything related to AFP, then went to the sites so they could direct me to install. I installed (I hope) the most recent version of Flash, went back to the sites with no luck. Can someone please help me? Your assistance is appreciated. Thank you.