If you’re using W3 Total Cache plugin for your WordPress site and not using MaxCDN, which you have configured sometime back, W3TC may show this error when you visit the plugin dashboard: ‘MaxCDN encountered an error trying to retrieve data, make sure your host support cURL and outgoing requests: Your account has been disabled‘. Here is how to remove this error.
Fixing W3 Total Cache’s MaxCDN encountered an error
READ: Simple Fix to WordPress’s ‘An Error occurred in the upload. Please try again later’
1. All you need to do is visit CDN section and remove the authorization key and click on ‘save all settings’.
2. Done! The error goes away.
Note: FYI, we’ve used the MaxCDN service in the past on this site, but because of this site under a shared hosting plan, hosting provider has blocked some IPs of CDN which prevented the functioning of service, when contacted host, they asked to move to a separate server. That’s why have we stopped using the CDN service.