Sorry if you did not understand my instructions.
Regarding bullet point 4: Check Reader >Preferences > Internet > Web Browser Options> The blessed app should be " /Applications/Adobe Reader.app"
You specified that you don't see the path, then it might be some problem in your installation.
Please see the attached image and let me know what you see on your system.
Regarding bullet point 5: Load PDF in Safari.
This means open any PDFs in Safari web browser.
Please make sure the below highlighted plug-ins are installed on your system by going to the specified path. And make sure the version of the below two plug-ins are 11.0.06. You can find the version by selecting the plugin and hit Command+i.
Go to your Main Hard Disk/Library/ Internet Plug-Ins/ AdobePDFViewerNPAPI.plugin
Go to your Main Hard Disk/Library/ Internet Plug-Ins/ AdobePDFViewer.plugin
Please let me know if these help.
Thank You