Unable to access port outside Network

[jomi77]

Hello,
I have an http service running on port 8000 on my windows 10 laptop,for which I have mapped and downloaded the neccessary openvpn configuration from portmap.io .
The problem is, I am able to access this service from my home network but it gives an error "Invalid Request or server failure. HTTP_Proxy " while I access it from outside. I have not port-forwarded my router since I was under the impression portmap.io service did the same.

Basically, I am looking for a solution to access the service I run on a port on my PC from the internet without having to confure portforwarding on my physical router.

Any help would be appreciated. Thank you!

[Pippin]

You will find support on portmap.io

[jomi77]

I don't seem to have any issues as far as I can see in their support section. netstat commands shows the port listening and there is no firewall blocking it.
With openvpn not running, I get a normal request timed out while trying to access my laptop. But with it turned on and connected, the message is "Invalid request or server failure"
Anyway, I have written to them as well. thanks anyways