Verification
Review sites confirm that you own the product, usually by sending a link to an address on your domain. Create an address such as listings@yourdomain before you start, and use it everywhere.
Fill in every field
Buyers filter by pricing, deployment and features. A profile with empty fields drops out of those filters. Fill in pricing even if it is "from $9 a month".
Reviews come later
A new profile has no reviews, and that is normal. Ask your first ten customers after they have used the product for a month, and send them the direct link to your review form.