No.

While it’s great that you want to support the author with a positive review, please refrain from doing so on Amazon.  If you want to leave one, use Goodreads or somewhere else instead.

The issue is that Amazon has strict rules around book reviews, one of the most important of which is that reviewers are not compensated.  Beta Readers are paid to read and fill out the questionnaire for the books they are sent, and while they aren’t being paid to leave a review, it may still be considered as such by Amazon.  That is, they may interpret the fact that you were paid to read the book as a Beta Reader as the same thing as being compensated for leaving the review – so best to err on the side of caution here and simply NOT leave an Amazon review for a book you were sent via our Beta Reader program.

It is up to the Beta Reader to ensure that they follow this rule as we have no way to formally track it, however, as Amazon may penalize not only the person leaving the review, but also the author of the book or even Hidden Gems, this rule is very important and anyone found breaking it may be removed from the Beta Reader program.