Hi you,
#1. Change content Wishlist page:
We use WPC Wishlist plugin and this plugin uses shortcode [woosw_list] to display wishlist.
To customize this page you will have to edit the content of this shortcode, which is generally quite complicated if you are not a programmer.
There are some settings for this page in the setting page of WPC Smart Wishlist: WPC Smart Wishlist Setting.
#2. The code behind the link is the same as the user token generated by the plugin. Each user will have a different token to distinguish.
I removed this code from the link header for you, but it will still appear elsewhere, you don’t need to worry about this problem.