I had a lengthy back and forth with Acyba about the CBSubs plugin incorrectly subscribing/unsubscribing users. They agreed that the plugin was not working correctly. I'm including their response. I updated the plugin but unsure if it's still working right.
I have the plugin set as the following (subscribes when they activate, unsubscribes when they expire)
This is what happens when someone unsubscribes and then renews:
This is what Any says:
"The issue appears to be coming from "Community Builder" itself.