I got a message that my cron key doesn't match the saved key. What does that mean?
If you're seeing this error:
Wordfence could not start a scan because the cron key does not match the saved key
it's a relatively simple fix. Scroll to the bottom of your Wordfence Diagnostics page.
Check the box that is labeled "Disable config caching".
Now try a scan. The above error should not appear again.