I have added a number of websites to Cloudflare and none of them are connecting to MainWP.
I have whitelisted the Main WP IP as recommended.
I have also done the page rules tried it on: https://www.*****.store/wp-admin/ and Disable Security and Disable performance, as recommended, and still not connecting just coming up with the error message each time: Error No MainWP Child plugin detected, first install and activate the plugin and add your site to MainWP afterwards. The plugin is installed and all was working before moving to Cloudflare.