No ack email received when requesting DTS

I am trying to contact Apple via a DTS for multiple weeks now and I never got an acknowledgement after submitting my request.

It seems the request is not submitted, the contact page just resets when clicking "Send". Checking the console, there is a problem when connected to the MFi contact page "Uncaught ReferenceError: ui is not defined" in file contact-wip.js

Any idea?