Please once make sure that you have set the Wishlist page on your Site under the Dashboard > Theme Settings > Shop > Wishlist: https://i.snipboard.io/R7ovC5.jpg
If the page still doesn’t work after selecting then kindly please share your Site WP-ADMIN Login details in the Private Content field so that we can check this concern on your Site and help you out accordingly.
All is ok at this time, there is many change from 2019 and now !!
I had just check you godd page https://xtemos.com/docs-topic/wishlist/
Excuse me for disturbing you.