This is the page you will see when you double click the launcher icon on your desktop. Press game modes to see the different types of games, not PLAY NOW.
EDIT...Scott is correct, I set this up quite awhile ago and don't even remember the setup pages. Actually you will get another page that pops up first on your computer when you double click the Launcher Icon. It will be a much smaller popup then the shown page above. On that popup you press the play button and then what I have shown will be the next page you see. It will show this everytime you start the game. Now if you sign out every time, it may show something else then the above. I am always signed in, so this is what I see to enter games.
Launcher.msi is the downloaded file, not the installed file. If you right click the Launcher Icon, click properties it will have launcher.exe on the end of the URL, where it is located within your computer.
From some of the things I have read throughout the forum, I believe that people are downloading the New Version from links, but are never INSTALLING. Or they are not downloading and installing the correct file for their equipment. This may look like the mobile version, but you can't download the mobile version on a computer and expect it to work. Windows is computer, IOS is apple(probably tablet or apple phone), Android is phone(or android tablet). Unsure of chromebooks, but I don't believe they are computers. Never worried about the Mac as I don't have one, but believe it is a different download then the windows. It is here in the forums somewhere, look for Champs posts.