manuel-exm so the notification email is sent (set in "notify") but it seems that the time interval when to send the next message "subscribe_time" is set to 7*24*60*60 (so it should be sent once a week) but this setting is ignored. Any change is always emailed instantly.
andi subscribe_time is for subscriptions which is not the same as notify. Remove your email from notify, enable subscriptions and subscribe to the namespaces your're interested in. See http://doku.wiki/subscription