Alright, if the port’s showing up as open, your ISP’s innocence is preserved (for now). That means external traffic is probably reaching your router’s open port, but it’s getting lost somewhere between the router and AMP/Minecraft.
Double-check these:
- Port Forwarding Target IP: Is it pointing to the correct local IP of your server (not your PC)? If the server’s local IP changes, the port forward could be misdirected!
- Minecraft Server Settings: In AMP, under “Settings”, confirm Minecraft is set to accept connections using 0.0.0.0 or the server’s local IP in the “Server IP” field (not the public IP). Using a specific IP unnecessarily limits external access sometimes.
- Port Settings in AMP: Verify that port 25565 is set correctly in your server settings within AMP—go to the “Configuration” and check there too.
If all this checks out, we’re running out of usual suspects. Let me know what you find!