I constantly host a server for me and my friends to play Pyrce High, However when my brother and sister try to connect to the server, they end up with "Connecting... Failed" almost immediately when they try to connect. This happens for any games I host and yet anyone not on my network can connect with absolutely no issues. This has only been happening for the past month as before then it had been 2 or 3 months since hosting any kind of server.
Does anyone know what migt be causing this? Ports forwarded correctly on my router.