If you search Sales Pop (or any other Beeketing apps) on Google you may end up with an announcement from Shopify that Sales Pop is currently not published in the Shopify App Store. But don't worry, Beeketing apps are still integrated with Shopify. They can be installed easily from our app listing for Shopify.
There you can find all Beeketing apps for your Shopify stores such as Sales Pop, Boost Sales, Mailbot, etc. Please visit this page: https://beeketing.com/shopify-apps and click "Get app" button, the installation will work automatically just like it's used to be in Shopify App Store.
If you have any questions, please contact us at firstname.lastname@example.org.