[HaZeust]

First off, it's generally a good idea not to port-forward your own home router outside of defaults (Even if it's just 25565; I created a nightmare scenario for the ISP guy back at my parent's house when I was around 13 doing this).

There's tons of options to host servers in the cloud with near absolute control. I used to use a SaaS company called Minehut (https://app.minehut.com/) before I got into cloud computing and using AWS EC2 (https://aws.amazon.com/blogs/gametech/setting-up-a-minecraft... - like $8/month).

If they're interested in learning the nitty-gritty on cloud computing and hosting (they probably do if they're already learning Curseforge), then get them into the AWS method. If you want something one-and-done, opt for Minehut.