Ip address is in another state.

What kind of streaming events? I had a similar problem for a little while when I moved from Rhode Island to Connecticut and switched from Verizon to frontier. It's a little complicated in my case because Verizon and frontier have gone back and forth with each other's customers. So IP blocks could be weird but it didn't cause me any problems streaming anything. Is this for a sporting event? Some kind of blackout issue? Why do they care if you're one state away? Rhode Island is so small that it is probably within accuracy of the system. Like if you lived in Texas and your IP was that far away? Not only would it still be in Texas, it probably still be in the same town. So this seems like is something that only is allowing Connecticut residents which could be relevant.

As for fixing the issue, getting a new modem might help because it might get you a new public IP that has different or somehow more correct geolocation data. But not only is that unlikely it would only be a temporary fix since your IP address can change and often does. It's a good thing that it changes too for security and privacy reasons. I would try contacting the people offering the streaming service and ask them why you're having a problem and if other people have problems and if so what do they do? It could be a simple as them updating something in their system or you might need to use a VPN. But sometimes they can do things to block or discourage vpns. Is this anything work related where security becomes a concern?