Suddenly can't stream from PC

For some reason I can’t stream from PC anymore. I turned firewall off just in case, so I know it’s not Windows problem but to no avail. Is this a router thing? Maybe some router settings went off or something?

If so, how can I solve this?

I haven’t streamed anything for some time now but last time everything was ok

I use iPhone 6, latest infuse app and Windows 10.