If downloading it thru the Adobe site is not working, you should explain what problems you encounter if that is the case. An alternative that you could try is to download the file directly from the page linked below.
You can download the trial version of the software using the link below and then use your current serial number to activate it.
Be sure to follow the steps outlined in the Note: Very Important Instructions section on the download pages at this site.
Photoshop/Premiere Elements 11: http://prodesigntools.com/photoshop-elements-11-direct-download-links- pse-premiere-pre.html