They mailed me couple times to start task on hackerrank. It was not to hard (Java, dowloading/store json, parsing/mapping to object, validating fields), but I had to take more time to make it well-formated than expected (45 min). I sent a git link same evening. I was ready to have not next chance (rules is rules), but I was wondering to have feedback regarding my solution. Instead the company just sent template from no-reply email. So be ready for that.