We recommend our users familiarize themselves with Amazon's various guidelines for writing reviews. You can see Amazon's full help article on the subject here.
In particular, we at pubby would like to highlight:
Reviews may not contain hate speech, sexually explicit content, profanity, or harassment
Reviews on Amazon must be written in supported languages of the Amazon site where it will appear. For example, Amazon.com (US) only supports English and Spanish, so a review written in French would be rejected or deleted by Amazon for this version of the site.
Thank you for abiding by these guidelines!