Using ngrok to run my Minecraft Server

Hi everyone. I was trying to build a Minecraft Server for some friends and I using an RPi 4 4GB. I have created the server and everything is running well, but I cannot port forward as I am under a NAT from my ISP, and they charge a ridiculous sum to have an open static IP. Then I tried to use ngrok to host the server without portforwarding but have not got it to work. Ca anyone help me with this?

I am using the Balena Minecraft Server ( https://www.balena.io/blog/how-to-create-a-minecraft-server-for-the-pi-4-with-balena/ ) to have my server

Thanks!

Nevermind I have fixed the problem.

Thanks!