You will probably not like my response here but please try to understand I am just trying to help ok. The auto-finalize rate is calculated by taking into consideration a number of variables and is quite a complex formula. Basically your stats are weighted toward the present and by the size of your transactions, so you must take these things into account when checking your stats. In future please try not allow any orders to auto finalize, your stats will also start to repair fairly quickly once you conclude some more transactions without issue.