Dear Laura Lopez Arana and Cameran Hadlock, thanks so much for your reply. I used Book Bounty in the past for another book, but then I got skeptical. They aren't actually compliant with Amazon's guidelines, are they? Other self-publishers are doing the reviewing and there’s a point system involved - both things that Amazon views very critically. I’d love to hear your opinions on this. Other than that, I’ve tried BookSirens - my book got rejected, and BookSprout - not a single test reader. I’m just really afraid that my book will tank, meaning the BSR will just keep climbing, and I won't be able to turn things around. Or even worse, another self-publisher might 'steal' my niche or positioning and ruin everything with shady reviews.