Today, without any recent change to our credentials, the Creating Customers endpoint is returning a 403 with message
The supplied credentials are not authorized for this resource. Our sandbox is working fine.
I can take a look! Would you be able to share any Dwolla resource ID associated with your Sandbox account so that I can look up your account?
I should clarify, any Dwolla ID except for the Key/Secret which is considered sensitive information. You can also DM me your Sandbox email if that works better!