I get what EDD is but when a seller sets dispatch and delivery and something goes wrong ebay punish sellers with defects which can destroy a business or account with things like a few late scans by a couier. 

I would rather put 1 day dispatch with 2 delivery as that is what happens most the time with delivery. But If I put that and courier scans late then delivers late I am punished by ebay. 

Maybe ebay need to have a look at how it treats sellers with metrics and punishments as not exactly positive from a mental health point of view how we are treated or threat of punishment all the time