I see two possible reasons for the rejection
the activa store window, you have encoded inside your template. I like it that way myself, but it is javascript, so it could be the culprit
your skype button is also javascript, so that too could be the culprit.
of course, both could be (and probably are) the problem.
ebay has gotten so picky lately about stuff
if the store window was inserted with the [store_window] tag in template, rather than hard coding it in, then it's the skype button (which is kinda funny that they'd reject the very thing theyve been pushing us to include). If you hard coded the window in, then it could easily be both of them that's the problem.