Paypal Currency

Hello

First of all I want to say that i used the search for an hour already. I found many threads with smilair problems. But somehow i didnt found the solution. Also because the threads give solutions for older opencart version.

I wanted to make a paypal checkout. It works until the customer comes to the paypal page. He sees currency dollar, but it should be swiss francs! In the admin the currency is CHF. This currency is also supported by paypal... I have set it in my paypal account. Any ideas why there is showing dollar up?