bk334572,
You're not going to be very happy with the answer. You're a Visitor, not a member or current customer. You haven't purchased any software nor a WinCustomize subscription.
Therefore, the amount of material you can download is limited to a certain amount per year. It won't be reset until the date of your joining comes up OR until you purchase a Stardock product or a Wincustomize subscription.
The reason for that is that WinCustomize costs money to run. Less than half of this cost is defrayed by subscriptions to the site. The rest is provided by Stardock.
While it's true that WinCustomize and the artists creating wallpapers and skins advertise and show the use of the software and undoubtedly some of the software sales is due to that, maybe even most (I don't see the figures) we are not self sufficient.
Therefore, the people who pay for subscriptions for the software and the site membership get unlimited downloads as a privilege of membership and to encourage Visitors to become Members in a nice way.
So, I invite you to purchase a subscription to the software and/or the site...