Are you running the program with the required Administrator user account?
Please look at the following to see if it applies to you and your Premiere Elements 13 and what sounds like a no Internet connection matter.
The link addresses a version 12 issue, but should apply to 13 as well.
Have you refreshed your Web Sharing under Edit Menu/Preferences? Important - is this a "it worked before but not now" issue or a "it never worked before issue"?
Please let us know the outcome.