When I try to install the store, it says that the link does not work! Please correct! 
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The page you are looking for does not exist. How you got here is a mystery. But you can click the button below to go back to the homepage.
This has been an issue for months. (if not years?)
I have been putting off reporting this because registration for the chat is “disabled on this server” 
But here we go again. Forcing yet another account on me to flood my password manager -.-
OpenID should be embraced more.
Yep, definitely broken. And the “ocs-url” utility they point you to doesn’t work under a current Fedora install. And no one can be bothered to tell you how to do a manual install for KDe themes or theming componennts (window decorations, application style, etc). Under Cinnamon Desktop I could just drop extracted directories under ~/.themes/ and they would actually show up.
As much as I have become thoroughly p*ssed off at the GNOME folks intentionally breaking theming in GTK, this lack of information and/or broken/missing tools doesn’t help my aggravation (I was moving to KDE because I got tired of GTK being constantly kneecapped by a bunch of MS Fanboys).