What you're seeing is what you can expect from Medium. The earnings ratio, or algorithm as people say, has been intentionally tweaked by the company. Instead of a few dollars for a story that is marginally well received and engaged with, the same level of engagement is now going to be worth a penny per every five reads. Medium is not a place to make money as a writer. They (medium) aren't here to help you earn money, is what you're going to end up hearing.