About 2 years ago, I signed up with them in order to earn points for my Jet Blue account. Answered a few surveys here and there and earned enough for a roundtrip ticket. Past few months, my account was being shut down, I emailed them asking what happened, and within 48hrs or so the account was active. This went on for about 4x. Finally, today they officially shut me down, after emailing them, they mentioned that:

"Our security system has flagged your account as being activated and operated from outside the United States. We cannot activate your account as this is in violation of our Terms and Conditions. For more information, please visit our Terms and Conditions page.
If you have any questions, please let us know."

Thing is that the account was opened and used while in the US, and my last out of country trip was in Nov 2017. Guess will have to find another way around this.