The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
Don't allow discounts to be applied to specific variants: I liked how simple it looked, but falls short of basic product selection. Many other apps allow variant selection, so I will keep searching for a good discount app.
Thank you for your feedback. We really don't have ability to apply discounts to particular variants at the moment. We'll add this feature to the app ASAP. Thank you for the suggestion, it's valuable and very helpful for improving EasySale!