I am using a Yubikey Neo with NFC and cannot get logged in with SSH to a CentOS 7 box. I am able to do it via usb on Windows/MacOS/Linux via a command line/terminal. On the iOS app, it just keeps saying wrong username/password and keeps opening the prompt. I have tried turning off password authentication (heard you can't use both) and still no dice. I did use the AuthLite NFC iOS app to copy to clipboard and paste it and confirm it is correct. sshd_config is set per your recommended guide. This is my last step before transitioning over fully to Termius for my needs and getting a subscription.