Using AWS Activate - Founders credits to pay for Amazon EC2

This link should provide you with a view of the services to which you can apply the credits.
https://aws.amazon.com/activate/faq/

Q. What can I use AWS Activate credits for?
AWS is the world’s most comprehensive and broadly adopted cloud platform, offering over 200 fully featured services from data centers globally. You can use your AWS Activate credits for AWS services and support from infrastructure technologies like compute, storage, and databases–to emerging technologies, such as machine learning and artificial intelligence, data lakes and analytics, and Internet of Things. For a comprehensive list of eligible services, please review the lowermost section of the credits page here after receiving your AWS Activate credit approval email.

I received my bill and, indeed, my EC2 credits were covered for the two instances I have.