Was my free API Key banned/blocked?
If you are using our free plan and experience a 403 error on HTTP response with the BANNED_FREE_PLAN_IP_ABUSE in the error message, then your free key was blocked as our system detected a link to another free API key (more than one API key was accessed from the IP address that accessed this key).
However, please be informed that the existence of each additional API Key for a subscription (enabled or disabled) above the plan quota is charged 1 USD per day, with a minimum of one day. So it is possible to have multiple API keys under a single account.
You can have only a single free API key and an unlimited number of paid subscriptions; paid subscriptions and single free API key usage are allowed at the same time. To continue using the free plan after the ban, another free API key needs to be provisioned on a different email address, but this can happen again if the rules will not be satisfied.