Launcher and patch downloads stop after a few seconds

[DwnldDude]

I have a 250mbps fiber connection at home, and the downloads from blade and soul servers stop after 5(ish) seconds every time. I have not found any other websites or downloads that this happens to. it's not just the patcher downloads, but also downloading the B&S_Lite_Installer too. It downloads fine on the same computer on another internet connection (work, or my phone's hotspot) so it's just my home ISP (Hotwire Fision for the record). I have reached out to them but they just say that they don't block anything. I've tried plugging directly into their modem jig bypassing my router with the same result. Anyone have any insight as to why B&S just will not download for more than a few seconds?