It seems you've been wrestling with this since March 2021?
https://forum.audiogon.com/discussions/settings-for-the-jolida-phono-preamp-jd9-ii
These specs seem a bit odd to me. 60dB gain is usually for a MC cart with output around 0.5mV. 36-42db is more consistent with MM gain. I've never seen MM gain that high before. Accordingly the MC High and Low gain on this phono all seem really high. Clearly I'm missing something here or this phono is meant to be paired with a really low gain amp?