Always show MATIC instead of my Currency (POZ)

We are developing react native mobile application, where we have used WalletConnect library to connect external wallet in our mobile application. 

In our app there is an functionality where user can transfer there coins with connected Rainbow wallet. We are following the proper way to achieve this functionality in our app. Every thing is going okay, But when we are excute the transfer function by wallet connect sendTransaction method, it show confirmation popup on Rainbow but showing MATIC instead of my currency (POZ), however I it working well in other wallet such as metamask.

Kindly provide me the update on it ASAP. And revert me if you anything more information need from me.