So that there is no confusion, I'm going to put in this post the Steam keys for the beta and the keys for the Itch files. Every time I update the files on Steam and Itch, I will place the new keys here. I hope it is of great help to you.
Personally I recommend the Steam version, since it is easier to update and with the new option to keep your games private it is much better: Click here for more information on private mode.
Itch Password Rewards [Ver.020]: It56@%-chApril
Steam Password Beta [Ver.020]: HardDesireApril
Remember not to leave any blank space at the beginning and end.
"ITCH"
In Itch just download the game and extract manually. (If it asks you to donate something, don't do it, just click on the free option.)
Since the game is unzipped, place the [Patreon Rewards] file inside the game folder.(When you unzip the file it will ask you for the password.)
Unzip the [Patreon Rewards] folder and if it asks you to overwrite files, choose yes to all.
Ready, now the game contains the Nova Skins.
"STEAM"
To update on Steam, you just have to right click on the cover of the game in your Steam library.
Select properties.
Select Betas and place the Steam Password.
Validate and finally select "Patreons Only".
A small update will download.
Any questions you have, let me know.