Question about Zhiyun Crane 2

Hello Community I have a problem with my Crane since yesterday. when I start it, the mode stays in PF and cannot be changed - changing the mode is not possible, when clicking on the MODE button simply nothing happens. Although the Crane is in PF mode, the stabilisation does not work, NOTHING moves. Firmware upgrade has been carried out. Calibration has been done. All visible contacts have been cleaned (I have not opened the Crane any further). Need urgent help :) Cheers rafa