Your advice – not to take on any other projects until the first issue is sorted out – makes so much sense. That is the /logical/ thing to do… but unfortunately, sellers don’t have any choice in who orders a gig. We can’t block a seller or reject an order unless it’s through a cancellation. There’s no “approved by seller” process wherein a buyer submits relevant information and the seller clicks a button that says “Yes, I agree to do this.”
I’d love to see Fiverr give sellers a bit more agency in the whole process. We should be able to decline gigs and block buyers from ordering.
It’s one thing if a buyer purchases a custom offer without approval, but buying straight from the gig page is often a problem because buyers try to skirt the system or purchase a cheap gig and ask for extras /after/ starting the gig but then don’t want to pay for them. It’s a headache for sellers.
So, tl:dr – your advice won’t work because Fiverr doesn’t grant sellers enough agency to defend themselves against scammy buyers.