I find KDP's attitude of marking their e-mails, which confirm publication or blocking of a book 'no reply' as contemptible and ignorant of authors. Such an attitude leaves authors with no means of contacting KDP, when mistakes by them are made and to raise issues.
Does anyone know how to actually contact KDP directly and by e-mail?
General broadcast e-mails don't usually have a reply-to that you can use. Do a Contact Us at the bottom right of this screen and politely explain your situation. You'll get an e-mail response, which will likely NOT be helpful.
BUT, you can then respond to that e-mail (again, politely, explaining everything, because your e-mail will be read by a different person). If you have any screen captures that you want to send, attach them to the reply.