We had yet more purchases after your last two comments. Hmm, I really don't know what's going on.
At this point I can only recommend you to instead purchase the game on gog.com or steam, where you should have no trouble purchasing it.
Viewing post in The Symbiant - Gay Yaoi (18+) comments
Already done ^^ I haven't totally completed the game yet, but I'm extremely impressed with the quality of the art, writing, story, music and voice acting! The art especially; I have to just sit at stare at the cg's sometimes, they're so gorgeous! I'll definitely be buying more of your games in the future ♡