Unable to access wamp server using public IP: Webpage unavailable

Question

I have trying to connect my phone with the wampserver I created and trying to use different networks for both PC and mobile. To enable port forwarding I have changed the port in httpd.conf to

Listen 8080

and in my router settings I have added separate entries: one for TCP and one for UDP packets.

Lastly, I have also enabled

# onlineoffline tag - don't remove

Require all granted

in the httpd.conf file as well. Technically, I should be able to access my wampserver by

http://{public IP address}:{8080}/

I have also given access to the port 8080 in my firewall, but when I check it online with my public if, I get the 8080 port is closed on the {public IP address}. Unfortunately, I am not able to access the following server. I am bit confused at the moment and I guess I am stuck with something really silly. I will be deeply obliged if anyone could help me with the issue.