Hello,
Sorry to hear you are having issues. Please check if it was Normal Fence that is missing, check if those icons still available inside your physical desktop folder. If it was Portal Fence check if that linked folder still exist. If yes, than it might be that you have just accidentally move that fence into another Fences desktop page. You can learn how to navigate those pages or disable Fences page. And see if that those missing Fence come back.

Thanks
Basj,
Stardock Community Assistant.