I wanted to ask you what you think about my problem. My internet connection works just fine while I connect with VPN but it doesnt work, or works extremely slow, while on ethernet. It worked just fine until today a couple hours ago. First, I thought it was a problem with my provider so I called them twice and they said that everything looks okay from us, and then I just spontaneously opened VPN (psiphon3) and tried connecting to the internet and it magically works! I hope everything is understandable of what my problem is! Thank you.
If you are on windows, you should check if proxy is disabled. So go in Internet Options (in search bar or run inetcpl.cpl) → Connections tab → LAN Settings button and disable Proxy server.