I tried removing the unsubscribe link in 5 threads for which I received emails. They all worked. If I clicked on a link for a second time, I got the invalid id message likely since there was no longer a subscribe link to that thread.
I checked this in Thunderbird and also using my ISP's web mail.
I'm also wondering why you are getting the invalid redirect URL from
https://mail.yahoo.com from? Are you using a Yahoo email address?