Purchasing Stones

my server is pH, im playing this game called DBZ Dokkan Japan in IOS and I want to purchase ingame items but all I get is an “error: 1025210 please contact itunes support”. I already changed my Jp itunes accout to my server, pH but it still didnt work. Can someone help me please i want to purchase stones so i can buy the time limited items. Any help will do so as long as i can get my items :(