Hi, try going out of Kodi and go to settings then more setting, storage and go to cache and clear it. Ater this give it ago see if it helps, if not i would then go settings then more setting, Apps then scroll down to kodi(xbmc) and this time clear data and the wait for it to get to zero and then re-run the 1st confluence skin and see if this helps.
As for skins you can always go to system, Appearence and then on your right hand side you can add or change them.
Hope this helps you out.
Dave