users can't unsubscribe from the opt-in email

[joerosenthal]

listmonk 2.0.0

I added the following code to the footer of base.html, and when sending out opt-in emails, the actual unsubscribe link is missing
<p> {{ L.T "email.unsubHelp" }} <a href="{{ .UnsubscribeURL }}" style="color: #888;">{{ L.T "email.unsub" }}</a> </p>

If a user does not want to opt into my mailing list but wants to remove their email from my database, it doesn't seem like there's currently an option to do so.