the first api call i am doing to get token return with success. after i put the token to open the paypal lightbox window. the light box open for a few seconds with blank page and then redirect to classic display express checkout. I couldent find any solution for that. The wired part is that if i copy paste the example form paypal its works well : [url=http://plnkr.co/edit/RifUli3hDIq6kQJI0Ujc?p=preview]Plunker[/url]

thanks in advance.