I saw the below links, However, all of them use the v1 API and I’d like to use the v2 API.
Connecting to Coinex API issue
how to connect Coinex exchange with API?
How To Trade With CoinEx API?

my code and other person code exact same except username id or token but mine give error that username not exists or token is wrong

I was using requests in python and it gave an error for the code :
import json
import requests