With the recent integration of Cloudflare as CDN+WAF, it is not possible to use Sucuri's malware detection and cleanup services.

Indeed, although Sucuri can be setup behind Cloudflare CDN (as described here: https://docs.sucuri.net/website-firewall/configuration/support-for-cloudflare/), with the way Cloudways have integrated Cloudflare, a Cloudways customer does not have access to the Cloudflare configuration, hence we cannot setup Cloudflare CDN to point to Sucuri server, as opposed to the origin server.