To expand, we have users who click on the “Subscribe” link (which then changes to “Unsubscribe” as expected) and then receive one or two emails. When they stop receiving updates, they revisit the topic to find that the link that was showing “Unsubscribe” (indicating that they were subscribed) has now changed back to “Subscribe” (indicating that they have randomly been unsubscribed).
Its this random and unwanted unsubscribe action that is the problem.
