Settings – Store SEO.
The ↗ Store SEO tab of your Vendor dashboard is where you can configure your store’s Search Engine Optimisation (SEO) to help increase traffic to your store. You can set your SEO title, meta description, meta keywords, Facebook title, Facebook description, Facebook image, Twitter title, Twitter description and Twitter image. The text and images you select for these settings will be displayed when your store is found in search engines, and on Facebook or Twitter. If you need help understanding SEO, read this article.

store SEO menu tab
Tip: Be very selective about the text and images you use! Do a bit of keyword research before configuring these settings, in order to have the best chance of success.