"Subscription suspended" reason on every eval
Your trial expired or the subscription is past_due / canceled. Open the Subscriptions page (Account → Subscriptions) to reactivate.
"Invalid Management Key" on every eval
Confirm the key has CanEvaluate permission and its application/environment scope matches the request. Rotate it from Develop → Management Keys if you've lost it.
Flag changes aren't reflected in my SDK
Cached values may remain visible until the configured cache period expires. Use Cache → Purge to request a fresh value on the next evaluation.
My A/B test never shows a winner
You need enough conversion events for the z-test to clear the confidence threshold. Sample-size depends on your effect size — for a 1% lift on a 10% baseline conversion, you typically need tens of thousands of exposures per variant.
Stripe took my money but my account still says "Trial"
Payment confirmation may still be processing. Refresh the subscription status, then contact support if it does not update.