This article will explain how to properly configure your playlists/widgets etc. to only be embeddable within domains that you allow.
Step 1 (Privacy Options)
From the embeddable source click onto 'privacy' here you are able to select the 'Domain embed' option which will restrict this playlist/widget to only be permitted to display in domains you choose. Be sure to click save after.
Step 2 (Setting up the Domain)
Now visit https://app.searchie.io/settings/embed-domains and you will be able to add domains that you want to restrict these certain widgets/playlists too.
The format of your domain should usually be: https:// followed by your domain. Make sure to save your domain after. Note: your widgets will be restricted to the sites you list here.
In the case that this domain setup does not work and your widget receives an error on your site (404 or similar) try other domain formats. If a domain does not work for you with https:// in some cases using https://www. or just www. followed by your site should fix any 403 error you receive.