Biddano Flutter Developer interview questions

Suggest Do not WASTE time for Interview process. I invested time in - Technical Round - Pratical Test (2 tasks) **sorry actually it's r&d features which I am sure they want it to implement in there products (invested almost 9hr to complete both tasks) - Technical Round 2 At last, HR informed that I CLEARED all rounds but my application is on HOLD. Waited for almost 18-20 days, HR called in between and again informed that my application is on HOLD. At last HR stopped answering calls and no reply on emails. I seriously didn't understood what's happened, However I assume that they just want to implement there tasks through Pratical tests and have no interest to hire anyone. I request that if any candidate invest time in whole process then they must receive proper answer/update (positive/negative) from you guys.