Hi pjotterke,
What version of the Ultimate Product Catalogue plugin are you using? To check this, click “Plugins” in the left side wordpress menu and locate “Product Catalog” in the list.
We’re asking because it appears that you’re missing some options from your Basic settings (including “Hide Empty Filtering Options”), so if you’re using an version below 4.3.11, we suggest you update the plugin.
NOTE: If you’ve made custom changes to the plugin code, then you may want to download the folder in wp-content/plugins/ultimate-product-catalogue (through an FTP connection or via your cpanel). This way, if changes get overridden with the update, you’ll at least have a copy of the code locally.