Nightmare situation taking the Online test yesterday. Logged in 15 min early to check in and had no issues. Once the proctor left, a significant part of the screen was blocked/frozen by the computer's brightness icon (mac). Was concerned this would impact question visibility, so did not start exam. Waited 20+ min for proctor to come back until they returned and restarted the exam. After that it was fine and completed the quant and verbal section.
And then the madness started - elected to take the IR break and application froze again. Every time the proctor relaunched the exam, it stalled and showed error message saying "sorry, we are experiencing technical difficulties." This happened three times until the proctor finally asked me to restart my computer and log back into the application. I was concerned if it would impact the exam and the proctor said "no, you may resume exam where you left off." I complied and restarted my machine - upon opening testing application, screen said sorry for the inconvenience, you will have to reschedule your exam and file a ticket. Did not get to start IR section, but Quant and Verbal was completed. Not really sure how to move forward - went to GMAC site and filled out the "contact me" page. At this point will wait to hear back and hope for the best. Test center not really an option right now as there's not much availability near me and I can only take the exam on the weekends. Little frustrating but hope it all works out in the coming weeks.