You could probably partially solve that with a ref link that uses a cookie to automatically-and-semi-permanently opt into its creators territory if you click it

Wouldn't work if they come back on a different device without logging in or clicking the link, expecting to see that territory again because "it was there last time"

Maybe the expectation could be assisted by explicitly asking them: "do you want to see this territory next time you visit?" If they click yes, prompt them to log in or create an account