The espresso maker is a stove top, and I am unable to find a way to use it on the induction cooktop. I want to make decaf with milk and that is filtered coffee, not instant coffee.
It sounds like the only thing you can do is use an interface disk - basically a piece of metal that is compatible with the induction cooktop, which will then transfer the heat to the espresso maker.
You can also potentially use an induction-compatible pan as an interface - see this question.
Unfortunately either way, you'll lose the fast-response benefit of the induction cooktop, because you'll now have to wait for the interface to heat.