Update on my previous post. I have discovered that if I add the permissions to the mail poet plugin for one main role then this is able to be accessed fine, but if this is added as a secondary role so only a limited people can access it isn’t appearing, however it was before. I have checked all of the roles and I can’t see anything wrong with the permissions, if anything I have added more than were there before. I have also added a permissions for mailpoet_full_access which is activated on the required secondary role.