No, your TNG eWallet account will not be suspended. You can still log in and access the TNG eWallet app using a non-jailbroken/rooted device.
Below are the articles that may be useful for you :
Can I log in to my TNG eWallet account using another device that is not jailbroken / rooted?
Can I continue enjoying the RFID and/or the “TNG Card” feature?
Why is the TNG eWallet app not supported on jailbroken / rooted devices?