Having successfully setup the Auth Provider and Named Credentials (authenticated), I'm stuck on this step
https://help.salesforce.com/s/articleView?id=sf.external_services_register_mulesoft_apis.htm&type=5
 
I am unable to click on the Mulseoft tile and the reason according to this article is "If you’re in an operationally isolated environment (OIE), the MuleSoft Anypoint Platform tile can’t be selected."
 
If you google "operationally isolated environment" you get no results other than that help article. So can anyone help me understand or fix this issue?
 
What even is a "operationally isolated environment "?! And how do i un-isolate it?