Your gig and gig image was not high quality enough. If your profile contains stolen images, or low quality images, etc, then it won't be approved. you don't have any experience or education or a strong portfolio then it won't be approved.
Wrong Service Category Selection
The buyer requests on Fiverr are shown based on your selected category & the service type. For example, your Gig offers an On-Page SEO service. You chose the category named “page optimization,” then Fiverr always shows you the buyer requests looking for on-page SEO services.
no problem, but you don't tell him to give feedback .Fiverr's system already reminds buyers multiple times to leave feedback on their orders. You don't need to remind them again