This only applies to CloudCanvas sites using CloudFlare

On Tuesday July 19, 2016 at 9pm UTC / 2pm PST CloudFlare will be performing maintenance for 15 minutes during which configuration changes to our dashboard and API will be unavailable. Note that internal testing suggests an impact in the range of 2-5 minutes, but we recommend customers plan for a 15 minute impact. During this maintenance, there will be no interruption to CloudFlare traffic and you will continue to get all the performance, security and availability benefits of the CloudFlare service. In addition, our Enterprise Log Share service will continue to collect logs as normal for delivery after the upgrade. However, during the maintenance no changes can be made to page rules, DNS, dashboard settings, or cache settings. No domains can be added or removed during the window, and changes to configuration via the API will be unavailable during this maintenance.