It was about yesterday. One of my clients, mistakenly rated me 4.4 star. Then he regrets to me and asked how to change the rating. As, I have never experienced such an issue before, I replied him to contact the Fiverr Support center. He contacted them immediately and the support center replied him,
Please reach out to the seller, and ask them to use the visit the Resolution Center button at the top of their order page to send you a feedback modification request".
Then, the buyer contacted me and I opened a dispute. The buyer replied to my ticket and agreed to modify feedback.
And That’s all about the story how a 4.4 star rating becomes 5 star.