"all' wireless devices use internal NAT firewalls. So you have a choice of port forwarding or using UPnP if your device supports it.

I find your statement confusing ... 2 isp's in the one household ... yet your sister 'can' connect on same computer but "you" can't. Are you taking us for a "ride" or what. In question 11 your answer was "no" but now you're saying yes. So which is it? I'm not sure I can be bothered with being stuffed around like this. Good luck in your endeavours anyway. Go to another forum & kid them around & stop frigging us around with time-wasting rot. Or otherwise top lying to us. I'm delisting myself from my subscription to this thread anyway. I've got better things to do!