Page will not become unprotected when all memberships are removed from access

Hello I have a custom post which is a paid event

https://londonrealacademy.com/events/create-a-life-that-means-something-an-evening-with-phil-mckernan/

And I have tried making it available to even non registered visitors by removing all memberships BUT the page then becomes blocked to everyone as if it was still protected but had no specific membership.

How do I clear that up?