And whole stress test is ruined for me because stupid incopetent Zenimax...

Yet, you failed to read the email correctly and post in the correct Beta forums.

Hi Sherlock. We have a thread dedicated to http://www.gamesas.com/topic/1483416-dedicated-eso-beta-discussion-thread/. However technical problems should either be brought up on the official ESO beta tester forum (access details can be found at the bottom of your invite), or through another official support channel. As beta remains under NDA it should not be discussed publicly.