Paypal does not automatically draw in the money

-- url of the page with the problem -- : http.//www.tierschutzfutter.de
-- HikaShop version -- : 2.6.2
-- Joomla version -- : 3.5.1
-- PHP version -- : 5
-- Browser(s) name and version -- : firefox

Hello,

If someone pays with paypal, I have to draw in money at paypal. What can I do that the money is drawn directly?

Kind regards
Michael

Thanks a lot. It was the enable validation mode