Sorry for your troubles @mirjana.petrovic.qa. Are the tests running automatically? What is the test text (the little popup text that shows up at the bottom when the tests run)?
There’s a frustrating bug I am trying to resolve in these that I think may have happened here. It’s described here. That’s a for a different course, but the problem may be the same. There’s instructions there how to attempt to get passed the problem. If the test text for your step doesn’t align with the instructions, that’s likely the problem.
Let us know if you get it resolved or have any more questions.