Unable to complete version check

[Glomoro]

When I try to log in I get the error message
"Unable to complete version check. [30410][30607][10009][19900][12175]"

I'm using Windows 7 on a desktop PC, wired connection, and the only change that's happened on my end before this started happening was enabling TLS 1.1 and 1.2 as default secure protocols in WinHTTP because apparently some time ago they were disabled by default for Windows 7, while they're enabled by default for Windows 8 and 10.

As for everything I've tried to fix this so far, I restarted my computer. Restarted my router. Tried to uninstall and reinstall the game. Tried to log in with Antivirus and Firewall disabled. I was unable to get my PC to tether to my phone (something people have mentioned helps as a workaround for this type of error, so I'm still working on trying that) and I don't really want to mess around with the TLS/WinHTTP stuff again if I can avoid that, because as I pointed out I was just reverting that back to what was normal some time ago for Windows 7 and is currently normal for the other Windows versions, and it would probably involve editing the registry which is more of a last resort.

Edit: I got my phone to tether, and still have the same error message. I've also tried removing the FFXIV folder from Documents\My Games, connecting to a VPN, flushing DNS, changing FFXIV_BOOT.cfg's BootVersionCheckMode line from 0 to 1