For me its easier to check the right soundcard on the command line. So I logged into the RPi by SSH (Logon: pi, Password: max2play) and become root („sudo bash“).
With the command arecord -L you get a list of the available audio input interfaces.
To your information: It is not possible to use the Audio-In Port in parallel with the Audio-Out Port, using SqueezeLite/WaveInput: Squeezelite normally uses the highest bit rate possible, WaveInput uses 16 Bit. The Hifiberry sound chip is not capable using different bit depth/sampling frequencies for simultainiously input and output.