I asked how to get masters. Here is the response:
Hello,
We appreciate your interest in becoming a Mechanical Turk Master.
We grant this Qualification type on an on-going basis. The best thing you can do to achieve this Qualification is to demonstrate a high-level of accuracy in your submitted Assignments for a variety of Requesters on the Mechanical Turk marketplace.
We'll let you know if you qualify as a Mechanical Turk Master. Please note that Workers cannot apply for this status - it is a performance based distinction.
I hope this helps.
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I said this did not solve my problem