Pinting problem It keeps saying " wrong big paper. The size of the paper that is dedectedcannot be supported."what should I do?

First, go to the following link and scroll down to where it says "Paper sizes" to make sure the size of paper you are using is on the list. If it's not, then you will not be able to use whatever size paper you want to print on.

Product Specifications

The only other thing you can do that I can think of is to go to the following link and then click on "Set paper size". You may be able to set your printer to accept the size of paper you want to use:

Printing Overview

Good luck.