Resulta Product Manager interview questions

I applied for a product manager position in early September with Resulta. The process was standard and i interviewed with a couple of current employees and HR 2 weeks later. Immediately after the interview they sent out a design challenge which took around 2-3 hours to complete. After completing the challenge however, the company ghosted me and has not replied to any of my emails. It has been around 3 weeks. Honestly its not worth working here.