Built-in content downloading not working?

[ryandtw]

I'm having trouble with the built-in content downloader on OpenTTD. I'm trying to download add-ons through OpenTTD's built-in downloader, but after I select the add-ons that I want to download and click the download button, I'm stuck on the "requesting files" dialog box and I can't download anything out of it!

What is the problem??? What can I do so I can download add-ons directly from OpenTTD? I put an exception for OpenTTD on Windows Firewall, but it doesn't work.

[Eddi]

check your firewall, you might have missed a popup requesting access to the internet, or you might have blocked it.

[ryandtw]

I did let the program go through the computer's firewall. But based on my testing, it appears that when I used my cell phone connection, it worked, but when I tried to connect with my home Internet connection, it doesn't work. Maybe my IP address isn't allowing me to connect. Having to use VPN at the moment. Is there any way to resolve this issue? How do I add an exception to my router firewall? What IP address and ports do I need to allow?

[DeletedUser10]

It's not wrong with the firewall, because I have the same issue on Android.
Close the blue window and try again.