Thank you for your concern, but I have finally found my issue. My video driver was just a little too outdated work correctly with Mirage so I updated it. I am having lots of fun with the game now (which is why I took so long to respond).
@railya Can you please try verifying your game files?
We’re currently experiencing an issue with joining servers; if you get stuck with the Main Menu background and no buttons visible, open your console and type disconnect then try to join a server after you are returned to the main menu.
If the add-on does not appear in your steam library then you might have had it just for a free weekend or similar. If it is there then you may have to repair or delete local content and reinstall. Good luck I wish DW got more attention.