Hello,
I just sent you an email with a link to newest beta build of our components. It contains some improvements in HTTP core for EWS. Please give it a try and let us know if it helps. If you encounter the issue again, please, create a VERBOSE log (you can turn it on after you connect and login, just before the get-list / get-message-info code) and send it back to us to our support email. We'll see if the info from the log can help to understand what is going on.