I apologize for the inconvenience caused due to this.
The delay caused in this case because we misunderstood your requirement. The Lite version of our plugin doesn’t send abandoned cart reminder emails to the admin (while the Pro version does). Since the Lite version does not send any reminder emails to the site admin other than recovery emails, we thought you wanted to send the same to the Shop manager instead of the admin. Hence we provided the custom code to send the Order Recovery email to the shop manager whereas you want to send the abandoned cart reminder email to the shop manager.
However, I have discussed your requirement with the development team and we are more than happy to help you by adding a filter in the plugin, using which you can send abandoned cart reminder emails to any email address of your choice. We can provide the custom patch for this by this Monday. Let me know if you still want this.