I got the same situation and I didn't copy any gigs.
https://www.fiverr.com/singaporese0/craft-a-personalised-seo-strategy-for-your-business
the reason given was: We appreciate your interest in becoming a freelancer on Fiverr. To meet the growing demand for high-quality services from trustworthy freelancers, we have carefully considered your profile and service. Unfortunately, we cannot approve your seller profile at this time.
Not sure how else I can start my gig on fiverr. Any advice would be appreciated. Thanks!