Of course you can, and you are encouraged to give feedback on customer reviews in a timely manner. You can properly explain your service concept and service features while thanking customers for their reviews. Especially after encountering moderate or negtive reviews, you need to contact customers in time to understand the reasons for customer dissatisfaction and make timely rectify.
Each customer has the opportunity to post a 2nd review after the first evaluation, by providing customers with satisfied remedial measures to ask customers for a 2nd favorable review is a very useful public relations strategy.
If the customer refuses the remedial measures, you can also explain what happened from the perspective of the seller, so that customers can hear different voices, see more comprehensive information, and let customers make their own judgments.