Ok, I changed the email address in the WA globals file.
Now, I am getting the email! So obviously the problem was that I wasn't using an email address provided by the web host to test this.
still a problem:
I do not get any validation now. I only get redirected to thankyou and email if I fill in all fields.
If I press submit without filling out all fields it just reloads the page.
some problem somewhere with the validation?
I attached new WA globals file