Sorry, I probably created confusion posting to you the german card and forgot that I posted before the englich success page ...
But I have two success pages, one german page and one english page and the connection (and redirection) between the pages should be correct (hopefully!).
(I have created two whole different sets of checkout pages.)
Also, like I said, sometimes (or rather most times or in most browsers) it works well !!
Just in the Windows/Firefox combination I get the success page immediately forwarded to the card page.
I attache the german success page.
Btw why and when should the success page redirect to the card page?
Thanks for looking into this!!