Tixel Developer interview questions

I was literally ghosted after the 3rd round of interviews with Tixel. On the first round I talked to the internal recruiter and then to the Co Founder who asked me to complete an assessment which took me half a day of work. After that I was ghosted, no feedback and no response to emails, making me wondering why I spent so much time to speaking with unprofessional people. It now makes sense that the job ad is up since January 2023