Ofline Installer should not use Orion website because it is useless when there are problems with web interface. I'd vote for 2 options to select one:
- web ininstaler
- Windows (old version) installer
I've got a problem which fixes Orion Platform 2019.4 HF3 but when started instalation Offline installer redirected me immediately to website which was inaccessible because the entire problem. Weird situation ...