Sellers do not work on this portal. You will end up losing money even though you are right. PPH refunded an amount to the buyer giving me the reason that if buyer requests for a refund then legally they have to refund them, I was deep into 6 months development and PPH made the refund. PPH is very biased and never listens to the seller. If you want to really earn and work in a professional way do not work on this portal and choose upwork.com