I think it takes time before the KuCoin decides whether he passed the KYC or not but usually, it takes 24hrs to approved.

---

2 hours ago KuCoin updated their KYC verification guide and I think if he fails on KYC verification better repeat the procedure to submit a KYC verification again by following the new guide below.

- https://kucoin.zendesk.com/hc/en-us/articles/360015102254-About-KYC-Verification

Read the "part 3" for common KYC issues.