Our amazon store has been really quiet recently and I have just noticed that our estimated delivery dates on amazon are showing to a buyer as 9 to 10 days

We generally post if items are same day if purchased before 3pm

In the seller account under manager orders its giving a more realistic date of 5 days to deliver by

But I think we are losing sales due to it showing 10 days on amazon to a buyer?

I've got items listed with 1 day despatch and 2-3 days delivery as standard in shipping settings with an option of RM48 so dont understand why its showing as 10 days on amazon?

Any advice appreciated.