How do you add and delete things on your wishlist?

Go to your wishlist see the little checkbox that says delete by it click in it on whatever items you want to delete then scroll to the bottom and click organize wishlist items and that should delete it

but how do you add stuff?

In the bottom left corner of the picture of any item, there's a little plus sign. Click on the plus sign to add it to your wishlist.

Click the + on the items in user shops.

I found out how to do thanks