I unfortunately cannot test normal shops because there are no other players on the server it's still in development Curiously, everything worked fine on the 1.
Make sure you are using the latest dev builds and to test with some other economy plugin to see if this is maybe economy plugin specific.
If you are upgrading from a previous version of ChestShop please make sure to always read the warnings in the file's changelog! If you have an issue then please open a or post on for faster replies to questions! Admin Shops do not require a chest! If I do have enough money, it does nothing.