I don't really think it's conflicting, there is no api for non-enterprise, it wouldn't be in base enterprise anyway, it'd be something you have to ask for specifically
There's a flag for it and everything, so I'm pretty sure it exists. If you were asking for your own purposes/wanting to get Enterprise to use it, I would ask sales/your account manager.
Someone just checked, and the tickets appear to be within the normal support timerange. You should be able to increase the priority of the ticket in the sidebar, if that helps
No, the normal CDN is just http/those ports are http only. Your options of proxying SSH through Cloudflare is either Cloudflare Spectrum (Pro or higher can use ssh, but super expensive at $1/gb), or Zero Trust, which requires client software* as well as software on the server (cloudflared on server, and depending on how you set it up, cloudflared on client, or WARP w/ Private Network)
SSH can also be browser-rendered through Zero Trust
There's no official Cloudflare plugin to do so, but Google shows a number of third party plugins which claim to be able to do so. R2 is S3-Compatiable at the end of the day so most S3 capable libraries that let you specify a custom endpoint should work.
Please do not post your question in multiple channels per the rules at #welcome-and-rules. It creates confusion for people trying to help you and doesn't get your issue or question solved any faster.