Yelp UI Designer - New Grad interview questions

Contacted via email from an obvious highly used templated response from a generic person who offered no title. In this email they provide you with the next steps: a design test. (cough cough - spec work). They ask you nicely not to post any of your work anywhere, but do not have you sign an nda. Design test ask you to redesign either a web flow or mobile flow. You have just less than a week to complete. After returning my package to the generic person at yelp, again a receive a non-human reply that states it has been received and will be passed along to the review team and should hear back within a week or so. One week later, non-human reply that states either you are a match or not.