sooo when you press DOWNLOAD NOW and go to the download page, it gives you a list of downloads, two of them being the regular base game and title and two other ones then the others having "FULLBLESSING" added to the end of the file name and you should see an option to input money. The Full blessing version is $8 USD so when you put in that amount the file " CrimsonChains_FullBlessing_win" should be accessible.
so TDLR; go to the download page, type $8 USD put in your card info in, pay, and the download link should pop up.