Http ConnectFail in game, but not in studio

Help and Feedback Scripting Support
1

I’m trying to make a python application send stuff to roblox, it works in studio already, but then when I try it in an actual game, it just says ConnectFail, I dont know how to fix this and its running on http, its port forwarded tho and not localhost.
I will not try to buy a domain or get it on https.

2

Is the IP in the following ranges?:
127.0.0.1 to 127.255.255.255 - Loopback and other reserved addresses
10.0.0.0 to 10.255.255.255 - Class A Non-routable (Local)
172.16.0.0 to 172.31.255.255 - Class B Non-routable (Local)
192.168.0.0 to 192.168.255.255 - Class C Non-routable (Local)
If so, You are connecting to a local address and the address needs to connect to your internet-exposed IP address. (Don’t disclose the IP on the dev forum!)