I paid for it and I checked that it was fully updated before uninstalling it. I've uninstalled it, thinking that I could just reinstall it but it wasn't allowing me to.
I believe it was an error message a few seconds after the game window started to appear, it said that a file was missing, I checked the integrity of the file and then uninstalled. Went to re-install and it won't allow me to select a game version.