How do I know if I am eligible to receive AWS promotional credits?

All developers with at least one live skill that apply for the program will be eligible for a one-time $100 AWS promotional credit, valid for 12 months. After receiving an initial credit, eligibility for additional promotional credits is determined on a month-by-month basis. Developers are eligible to receive a $100 AWS promotional credit each month if (1) at least one skill is live at 11:59 PM PT on the last day of the prior month and (2) the developer incurred an AWS usage charge related to an Alexa skill during the prior month.