Why does it take 5 days for trades to process? Your rules state it is 2 days, but it always takes 5 days. This makes no sense.
Give trades 24 hours to be protested. If no protest, they are processed within 24 hours. If protested, they are processed within 48 hours. There is no viable reason for it to always take 5 days.
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In public prize leagues, the "Time to protest pending trades" setting is set to 2 days. These days are measured in full days. For example, if a trade is accepted on Monday, Tuesday and Wednesday are the 2 full days and the trade will be set to process on Thursday. However, if a trade is protested by at least 1 manager, the trade is pushed back another day as it will be reviewed by the League Office.