Claiming that you can't ask people to leave a review on Trustpilot sounds like a deceptive sales tactic with no legal basis.
On the other hand, regarding reproducing reviews, I believe that (1) people own the copyright on their own reviews and (2) Trustpilot's T&Cs likely include that when you leave a review you grant them a licence. Therefore it may indeed be that the only way to reproduce a review is to get the consent of the author or of Trustpilot.
On the other hand, regarding reproducing reviews, I believe that (1) people own the copyright on their own reviews and (2) Trustpilot's T&Cs likely include that when you leave a review you grant them a licence. Therefore it may indeed be that the only way to reproduce a review is to get the consent of the author or of Trustpilot.