IIRC they have a minimum payment. You need to put $5 in your account. Not sure what they do if you pay by subscription and only use a few hours, but when I was

IIRC they have a minimum payment. You need to put $5 in your account. Not sure what they do if you pay by subscription and only use a few hours, but when I was using DO, you needed to fund your account with $5 even if you were using the $100 free credit from GitHub education.