Where to find direct link to give product review?

Hello, Customer is asking for where he can give product review.

below is link when I click on product stars at product page.
[amazon url]/review/create-review/ref=dpx_acr_wr_link?asin=***********#

should I remove ref= section and paste below link to customer ? or ref= is good to leave there ?
[amazon url]review/create-review/asin=***********#

Help greatly appreciated
this message looks messy, is it understandable ?