For me the DLsite is not available, also because of a language barriere and the payment options being not available to me i cant buy it of fantia or Ci-en
Are you perhaps able to do something there?
Viewing post in Syahata's bad day(ver1.0.5) update comments
You can switch the language in the upper right corner of the DLsite web page.
You can pay by credit card. ヾ(•ω•`)o
First you can go to the page to buy points:
https://www.dlsite.com/maniax/mypage/user/buy/point
Then select For Books (you will need to sign up for a For Books account).
Then select "More payment options" and use Card.