Subscription Email Notification

Same problem as:
mpgh
.net/forum/showthread.php?t=1132611&highlight=unsubscribe

I cannot unsubscribe to a thread, yet I keep receiving emails every time there's a new post to a thread. The unsubscribe url does not work.

"vBulletin Message
An invalid threadid or forumid was specified."

I cannot unsubscribe using my user page either. Checking this url shows that I am not subscribed to any emails:
mpgh
.net/forum/subscription.php?do=viewsubscription&daysprune=-1folderid=all

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Unsubscription information:

To unsubscribe from this thread, please visit this page:
mpgh
.net/forum/subscription.php?do=removesubscription&type=thread &subscriptionid=4414259&auth=4f4a3e58d9569369be481 2bc030d8fde