I am sure that one bad review may affect your account short-term but not this dramatically. I am from Pakistan and I have just one 3-star review on my account. The rest of the 200+ reviews are 5-star. My gig often gets Fiverr's Choice. However, I still have experienced a drastic decrease in sales for the last 6-months. My friends, who are also from Pakistan, experience the same thing. We are wondering if this is the regional issue? Not sure 😞