How do I move my MFA credentials to another device

When you originally setup/added your MFA device to your account you were given the option to backup/save the pre shared secret. If you still have the backed up pre shared secret you can simply import this into your new device and, once you confirm it's working, delete the entry from your old device.

If you do not have a backup of your pre shared secret then you will have to disable your MFA device in your Omniwallet Account Settings, and then go through the setup/add procedure again with the new device.