I'm from Colorado and living in Hong Kong, so I occasionally need to do business on the state government website, colorado.gov. I noticed several years ago that I've had problems reaching the site, despite downforeveryoneorjustme.com reporting no problems and no issues mentioned in the news or other forums.
Initially, I would get DNS errors (that the domain was not recognized), but those stopped when I switched to Google's public DNS servers. Now, if I try to reach the site (on Chrome 53.0.2785.143 m, Windows 10) I always get a ERR_CONNECTION_TIMED_OUT error.
In the past, I've been able to download files from the site by getting a copy of the page I need from Google Cache, but now I need to upload something. What's the next step in trying to fix this problem? Is my only option a VPN/remote desktop?