Can't Install Blackfyre

I have tried to install it the conventional way through wordpress.org on the themes tab as a zip file and that has not worked. I have tried to put it in through firezilla in an FTP, this also didn’t work. I have legitimately purchased the theme a few hours ago and I have been trying for too long to find a solution to add the theme to WordPress that this is my last option other than paying themeforest. Some help would be appreciated, the sooner the better.