Ok. Probably best to withdraw it from ww.wp.xz.cn for now. Let me know if you have any joy with it. Thanks.
Sorry – will praise it the heavens if you can get it to work! Other plug-ins I’ve tried don’t.
After further investigation, it seems the Visual Composer issue happens when BuddyPress Docs plug-in and MailChimp User Sync are both installed.
The VC back-end edit-window opens, but the data doesn’t load. The spinning loader just keeps going round.