Can't buy ZP with any E-wallet

Hello guys, I have been trying to buy ZP over 3 days now and I just couldn't buy it. Everytime I try to buy it with PayPal or click and buy they just errors. I thought it was something wrong with my card I went to check my bank but the money still good to buy ZP. So can you please check the problem and fix, hopefully I can buy it tonight cause I been waiting to buy the VIP weapon for 3days. Thanks