Rooted devices give the installed operation system full access to all data stored on the device. That seriously restricts data security and integrity and does not comply with Outbank's security standards.
We strongly advice to not use banking apps, also Outbank, on rooted devices.
You can use Outbank on your own risk. Once you click 'Accept' in the alert message, the integrity of your data is your own responsibility. Outbank does not assume liability.
In addition: For security and integrity reasons, Touch ID is not available for rooted devices.