How to stop "Recent changes in your wiki pages" emails

How to stop "Recent changes in your wiki pages" emails

I have been getting this notification every day for 9 days (and nothing has changed for 9 days).
I have gone into Wiki setting > notifications and turned off all options.

The notifications started when someone spammed my (Empty) wiki. I've deleted the spam entries but now I get this email every day. How can it be stopped?

http://techmatters.wiki.zoho.com/

Janet