Hello! There's currently no option for private support of any kind. There's been discussions about offering private support, but if it is implemented, private support will likely be a paid service since it ties up an admin's time and prevents other users from assisting. There is currently no ETA on if or when private support may be offered.
When users need to provide details they don't want kept public on the forum forever, I've seen them go back and edit the info out of their posts, once the admins have used it to make whatever changes are needed. Maybe this would work for you as an alternative to waiting for private paid support to be implemented?
As for your Cloudflare question, we have a guide here on using CF to manage DNS: https://wiki.helionet.org/Cloudflare_DNS_Records
I can't comment if it's easier or not, but I've noticed a few users who were new to DNS management and able to use CF without any problems. It seems pretty straightforward to set up and I believe CF have good help documents if you get stuck.
Edit: I didn't see Wolstech had already replied before I typed this up ? I'll leave it in case the links are still helpful.