My wishlist only shows 15 items and does not have a load more button, when more products are added to the wishlist. This is something that worked before we updated woodmart from 4.0 to 6.0.
The number of products in the wishlist page inherit from the Settings you made for the Shop page number of products then the paginations are displayed. Please try setting the number of products from there.
It seems to be a bug in our theme. You need to enable “Pagination” in Theme Settings -> Shop -> Product archive -> Products grid -> Products pagination https://take.ms/ETbTA