Worst app. Waste my time. When I check out the items to pay, suddenly it exit payment page. I have tried it sooooo many times but it doesnt work. Urgh! it doesnt have function! like you would like to buy something, and you wanna pay for it, but it keep exit the payment page and it goes to order page. Damn! I hate it. I dont know what the hell is going on, but please! please fix it. Thank You.