Access my dashboards over Internet

I know this has been discussed before, and I read many topics here as well as other websites. But I can’t get it to work. Here is my situation: Grafana installed on a Windows PC, accessed on localhost:3000. I have set up DDNS on my router and by port forwarding (I know, not super safe, but just for testing) I managed to access several of my other devices. So by the same logic I set up as follows for Grafana (these are obviously not real addresses, but as a principle):
Address for access from WAN: xyz.com:3000
Address for port forwarding: aaa.bbb.ccc.ddd:3000

xyz.com would be my DDNS address and aaa.bbb.ccc.ddd the IP address of my PC. I would expect to see my Grafana user interface in the browser. Instead the webpage hangs and eventually returns the information that the page can’t be accessed. What am I doing wrong?

Try something different. Install Apache server or another web server with the same IP and see if it works or not.

Then you can see if the issue is grafana or not