It’s disappointing that they didn’t give you a clear explanation, but it seems like the second email is saying their humans looked at your business model, issue US cards to consumers all around the world so they can manage subscription spend - and, implicitly, so they can dispute charges or cut off cards as a way to stop paying a shady subscription service - is high risk and Stripe doesn’t want to do it. I can unders…
In some cases, it’s forbidden by law to reveal to someone that they’ve been flagged for money laundering.
https://www.law.cornell.edu/cfr/text/31/1020.320
> No bank, and no director, officer, employee, or agent of any bank, shall disclose a SAR or any information that would reveal the existence of a SAR.