where can I get a copy of the instructions for the above loco?
E-Z App and DCC are not the same technology.
Click Here (https://www.bachmanntrains.com/home-usa/images/44913_Decoder_IS.pdf) DCC On Board decoder technical data and list of supported CVs information on second sheet
If asking about HO scale 4-8-4
Click Here (https://estore.bachmanntrains.com/index.php?main_page=index&cPath=68&zenid=j7ilt584fk1js48dbjg8arv634) then Click on model image for available parts and exploded view diagram