If the contract is mentioned as unsigned, it means that you haven't really been hired. Waiting for notice, according to my personal analysis, there are two situations:
1, Wei Wan turned you down because there was really no good reason not to hire you. (Many recruiters are like this. This kind of person has problems in life and low IQ. )
2. Maybe you are choosing a more suitable person, applying for more people, and finally choosing a person based on feeling analysis, evidence and the interviewer's situation.
Personal advice:
Don't wait at home. You still have to keep looking for a job. I believe there is always one for you.
Survival first ... development ... maybe I said too much. Ha ha.