Chad Warner on "[Plugin: W3 Total Cache] "Unable to communicate with CloudFlare API: CloudFlare requires 'email' to be se"

I just upgraded 3 sites to W3TC 0.9.4. All sites use CloudFlare, so I activated the new CloudFlare extension. On General Settings my CloudFlare details had been wiped out, so I re-entered. Upon saving, all 3 sites show

Unable to communicate with CloudFlare API: CloudFlare requires "email" to be set..

I tried flushing all caches, but that didn't help. These 3 sites are on 2 different hosts (SiteGround and Bluehost). Is there something else I should do to make this CloudFlare extension work?

https://wordpress.org/plugins/w3-total-cache/