Do you have Enable Mods turned on in the game Options?

I'm out of ideas then.

Not saying that might not be an issue, but Frogboy & Derek did say that mod access would work across all platforms since it was imbedded into the game and therefore not dependant on the Epic laucher.

I tried launching from desktop and the Mod button is a no go for me also.  I went onto Steam, added the game, and launched from the Steam app and the Mod button doesn't work there either.  Sounds like you're in for another round of complaints from the die hard Steam users. 

Is multiplayer also grayed out?

Can you post a screen cap of your entire main screen?

This is how it looks in my start screen.

and you are running it directly in the Epic launcher or a shortcut created by the Epic Launcher?

Usually from what I have seen, when mods, meta, and multi are all grayed out, the game is not being launched properly

Hmmm.... it doesnt think you are logged into Tachyon so it's disabling the workshop, metaverse and multiplayer.

Im checking it out here.

When you say launch from the epic store do you mean the quick launch on the left side of the screen? I have tried that but it is the same.

That dosent work either unfortunately.

I have tried using the Heroic launcher too but that dosent work either. So it dont seem to be the wpic launcher that is the problem.

I have tried to contact you on discord but with no answer. I can accept no mod support on the test version, but not in the main release. If it cant be fixed please just say it so I can request a refund.