Update on this. I created a parent page with the slug of members-area ( Ive renamed this in the backend also) and then created a child page called private-event. With this page in the back end I selected the members are page as its parent. So it looks like this.
https://www.mywebsite.com/members-area/private-event/
When I sign in as a subscriber or even just the admin the page 404’s but when I disable the plugin the page loads fine.
Really disappointed with both plugins at the moment. They are made to be really simple but both have rubbish or no documentation at all.