Also seeing Error Code 918.
Pre-Ordered and installed via Steam.
Steam ID: "Trunk Monkey"
First tried running it around ~9:30-9:45PM PDT.
No VPN, only standard Windows firewall configured the same as all of my other games.
Already previously had Jedi Fallen Order through Steam without any issues.
I do notice that on the Origin Launcher, it does list both Jedi Fallen Order and Squadrons with a Steam banner. While the Jedi Fallen Order icon looks correct and right clicking on it brings up all of the normal properties (Play, Show Game Details, Add to Favorites, Repair, Game Properties, Hide and Uninstall), the Squadrons icon is greyed out and only has these properties (Add to Favorites, View Achievements, Game Properties and Hide). Clicking on the "Game Properties" does nothing.
I have tried logging in and out of both Steam and Origin.
It's kind of like it doesn't quite understand that it's actually installed or available yet.