Got this re that hit that didn't work but not much to do about it since I returned it several hours ago.
Hello,
I apologize for the technical problems. Please finish the survey, I will accept your HIT regardless to the completion time (even if you won't be able to send your completion code). Providing your mTurk Id on the first page will redirect you to the last step you've been working on.
In case you've been stuck on step 2, please make sure that you've checked a radio button indicating which text contains more errors.