Hi, I use Contact Form 7 and it work perfectly on sub pages, e.g. https://www.dk-institut.de/test-kontakt/
Bit if I use the same form use on the front page either in the footer contact or now just included in the page https://www.dk-institut.de/ it does not work.
I do receive a message on the screen that the email was sent, but I do not receive any emails nor does the sender receives an automatic reply email.
Again, the exact same form does work on any other pages, inlcuding the automatic sending of emails.