Please add a "List-Unsubscribe header" to the Live Campaign software. That header was a recommended standard a few years ago and is still optional but is pretty much required for sending bulk emails if you want to keep a good sender reputation.

More info on the List-Unsubscribe header here:
https://help.returnpath.com/hc/en-us/articles/222445367-How-to-implement-the-List-Unsubscribe-header