In order to embed private models, PRO Shapediver users need to allow external domains to embed their models. Embedding will be blocked from any other location not specified in the model Edit page.
You will find the Domain list in the Edit page of the model:
Add only full domains to the list (that is the hostname part of your URL, including the port number if you are using a non-standard one, i.e. everything after https://). Note that you can specify local hostnames and ports in order to set up a local development environment (e.g. 127.0.0.1:8080). Be aware that the precise hostname is being checked, i.e. subdomains need to be added individually. As an example allowing shapediver.com for embedding does not automatically allow www.shapediver.com.