Not working after moving database from one domain to another?

Hello, gotta say I really like this plugin. I was working on a staging site and had the plugin installed, and I have just now moved this to a live environment. In the live environment, it doesn’t seem to be working any more? The content would have already been in place (ie. all the emails are in place within the database).

When I view the source on the live site, the emails are not obfuscated. Yet on the staging environment, they are. Whilst the domains are completely different, the web host is exactly the same.

I’ve tried just editing one of the email addresses and re-saving, but that doesn’t seem to have done the trick either. Any ideas on what I might be missing?

Thanks in advance!