Cookies are files that are stored on your device when you visit websites that utilise them. They hold information relevant to the websites that you visit and allow for these websites to work in the ways that they do.
W.D.M.'s hosted system uses cookies for various purposes, including managing user authentication into the system. Without cookies, it will not be possible to use any part of the hosted system that requires authentication.
Additionally, some security features rely on the use of the cookies. Submitting data may not be possible without cookies.