might not be a bad idea to do an Open Beta now or even free access stress test as your servers are currently empty. It's been 6 hours from now I was sitting in matchmaking and there is like 15-30 people in all 3 regions all together. I understand Closed Beta is limited just for a bunch of people, your servers might not be that big yet to handle thousands of people ect. What you need to understand is that there is nobody testing anything, nobody playing, nobody stressing the servers. You need to giveaway more keys. You need to do Open Beta or any other to actually get people inside the game to play it, even if it has to be for free. I mean, it already cannot get any worse. Your Closed Beta servers are empty. Half keys you give away are going to wastage. Some people try it for an hour and delete the game, some dont even bother, some dont check junk folder in their emails, some people apply with 5000 emails and then trying to sell those keys and none buys them.
If you want to do Beta tests before Early Access, you need players. Overloading the servers is the goal here that you have failed at. Its not too late yet tho. Do something about it.
Thank you, love your game. Hopefully see you in there soon.