SAP Developer Senior interview questions

I had the following interviews: 1. Recruiter call 2. Call with tech lead and EM, they asked some behavioral and technical questions 3. Home Assignment 4. Follow-up on home assignment and more technical questions after the last round the engineering-manager and the recruiter disappeared. They neither replied the emails, nor gave any positive/negative feedback. I put a lot of effort on the interviews, but they just ignored the application after the last stage.