Just tried to cash out at just over $10, and I get the message that I still need to earn more to reach the $15 cash out level. Odd, as I've cashed out at the $15 and above many, many times before. Hmmm.
Edit: Just thought of something. Did the email say when the lower cash out threshold would take effect? I tossed the email. Maybe the lower cash out hasn't taken effect yet?