Spform 'unauthorized' only at 1st visit#

Hi i have a strange issue with my spform. Only in the beginnig when I fill it in, submit gives me a page with unauthorized in it. When i refresh the page and do the same thing, it works perfectly!

The only thing I can find about the 'unauthorized'-issue is that I have to correct my formprocAllowedReferers

but this is correct

i can send you the website by request

Please don't double post.