To K*i: KORG ZERO8 Digital Mixer

I received this item as a gift but am selling it because I won't be using it.
It's a multifunctional monster mixer.
The exterior is relatively clean, and the box is included.
Accessories include the power cable and manual.
For more details, the following URL may be helpful:
https://allabout.co.jp/gm/gc/204709/
Regarding operation checks, due to the sheer number of functions and my limited equipment, I have only been able to test the line input and headphone output. The results are as follows:

The indicator lights and VU meter are working.
Line inputs for channels 1-8 produce sound without crackling.
The EQ and other knobs and faders for each channel are functioning normally.
There is some difficulty selecting the 'A' button for the A/B buttons on channels 5 and 7. It requires multiple presses to select.
The effects on the touchpad (see image 12) are working.
The screens in images 9 and 11 are unresponsive for some reason.
The effect screen is touch-sensitive, so there might be a way to operate it, but I am unsure.
It appears to have audio interface and MIDI functions, but I have no way to test them, so they have not been confirmed.
I was able to perform line input, assign channels to A/B, and switch between them using the crossfader like a DJ mixer.
The CHANNEL/SEND/MASTER effects were also functioning.
It seems to work fine for basic mixer use. This mixer should be enjoyable for those who connect multiple devices and create sound using DJ techniques.

As this is an older piece of equipment with many functions that cannot all be tested, I cannot guarantee its operation.
We ask for your understanding of the above before bidding. No claims or returns will be accepted.