The problem repeats itself, I don't know what method to use to purchase the points, I tried Amazon, but you must be Japanese... you really want to buy the game, itchi gave me direct access to the purchase in dollars, but now it is not possible
Viewing post in Syahata's bad day(v1.0.5) comments
You can use DLPay (https://dl-pay.com/) to buy DLsite points.
Select the amount of points desired, than use PayPal to pay.
Once finished, it will generate a Serial Code do redeem the DLsite points (https://www.dlsite.com/maniax/mypage/user/serial/point).
Other option is to buy DLsite points from other 3rd party sites (Ex.: Tokyo Otaku Mode) were payments are broader (but the ratio price/points is higher).