https://www.dyndns.org/services/

Register and use dynamic or static DNS.

I think it doenst work if you try to point or park your free domain with cpanel, but it does work when creating a account on WHM.

So I was wondering if anyone else got this problem, or am I doing something wrong?

I do not understand your question. What type of help do you need?

It doens't work when I try to park or point a domain name with Free DynDNS domains on cpanel

so many free dns providers these days, just google and see