unsubscribe button at abandoned cart

Hi there, today I purchased another plugin from you – Abandoned Cart. When setting up the abandoned cart email templates, I’ve noticed an “unsubscribe” button at every email template. What is the link for unsubscribe? I sent a test email to my email address, and when I clicked on “unsubscribe,” it opened my website. Also, another question is rgd. the discount codes. Can I link the discount codes people win from spinning the WP lucky wheel to these emails?
My last question is regarding another plugin – Tracking order. Does this plugin track the orders with “Ceska posta”(Czech mail service) in the Czech Republic?