Help with WaveShare RP2040 Touch 1.28 IMU

I'm using this really nice board, it has a RP2040, a round touchscreen and a Gyro/Acc module all in one (plus a RTC and Battery management). My issue is with the IMU, the QMI8658 is supposed to have a fusion algorithm embedded but I can't seem to get it to work. Anyone else has tried this? I'm looked at the chip documentation and tried to modify the registers via I2C but I still don't get any values for the Quaternions... I'm feeling really alone with this issue and I feel like I would have been able to get an answer back on Reddit but I want to try here first..