issues with badge status

Hi.

I had the same problem that I solved when I notice that I did not connect the webhook with my Jenkins server. If, like in my scenario, you have your Jenkins server on a local virtual machine you must redirect the corresponding port of your home router to the corresponding port of the virtual machine.
In my case, I'm using a Ubuntu 20.04 VM running on Virtualbox on bridge mode so it is on my local home network like the host machine and using my home router as gateway. You can redirect the 8080 port of your home router to the VM running the Jenkins server if your scenario is similar to mine.
Once you are not doing Labs with the VM you can undo the redirection on your router.

Hope that helps.

Regards.

PS: I see on your previous post that your Jenkins server runs on localhost so in this case is best to try the solution that luisvivero gave you. Only if you can't get it to work and only for the the time you need for the lab you can try to redirect the router 8080 port to your local machine.