WishList plugin – menu only shows up for administrators

If you set your pages and posts to only show up for administrators, then it won’t be shown in your WordPress menu for non-administrators, so it won’t be shown by our menu either. Change the availability appropriately for your contents, and if they should be visible, our menu will show them. One of the settings, that can be the cause of this:
Wishlist SettingsConfigurationProtection DefaultsOnly show content for each membership level → and you should change that to No