Hello.

I want to do an exercise, for example, 'Exercise: Guiding users through a workflow'

And when I try to do it and press link 'Open exercise system' I get the error (on the screenshot attached).

Error: 'The exercise system is currently being extended to allow for more students. Please check again later.'

I logged out and deleted cookies, as was written in the recommendations in the Community. But there is no result. I don't have an access to do exercise.

Please advice

Thank you