While we investigate the cause of the current issue where games cannot be launched using the FV Launcher due to all being in "Coming Soon" states, here are some effective work-arounds that may be useful to you in the interim:
Windows Users
Two options depending on whether your have access to The Readyverse:
Option 1 - No Access to Readyverse
Navigate to the following file-path using File Explorer (you may need to enable 'show hidden items' to find the "AppData" folder; in File Explorer click "View" -> "Show" -> "Hidden items");
C:\User\
{UserAccount}\AppData\Local\Programs\f-v_-launcher\resources\bin\ttk\TheThirdKingdom.exe
You can create a shortcut on your desktop by right-clicking on the "TheThirdKingdom" (shown as an 'Application' file) -> Show more options -> Create shortcut, then you can move the shortcut to your desktop or another convenient location
Where the file path shows {UserAccount}, this will be your Windows Username (or an abbreviation thereof)
Option 2 - Readyverse Access
TTK can be launched from the Readyverse Launcher once installed from inside The Readyverse (for those who have access);
enter The Readyverse,
'Tab' to open the menu, select Library from the top menu then find and launch The Third Kingdom showroom,
walk over to the portal and press 'F' which shows the Install option.,
once installation has started you can leave the showroom. Once installation has finished you can exit Readyverse and will see TTK appear in the Readyverse Launcher.
Quickly hide/show the Readyverse Launcher using Alt+X
Mac Users
Mac users can search 'thethirdkingdom' in Finder which should show the application file and allow you to launch TTK directly