When the launcher opens, but you cannot see it, make sure you have it selected in your task bar and hit tab 8 times, then hit enter. This might work - testing the hypothesis on my PC seems to yield results. Are you running in 4K?
This thread was added on June 12, 2019, with posts from [Fatshark] Hedge.
Strange. The launcher sounds like it's opening "off screen" so to speak, which can happen with some 4k set ups, so that it happens on your set up is perplexing :3
It's not just you, but we've not found the correlation yet between players who experience this. Usually it's because of a 4k resolution and multimonitor set up combined, but not always. Just a heads up, you now have to tab 9 times in the BETA launcher to reach the play button as we added a new button.