It shows a few spikes but no actual response, If i tilt tap, or moce the IMU at all it doesn't move. If power the controller without the IMU it correctly states that the IMU is missing though.
Ill try a new cable first and then see If i can source a IMU in the USA.
Could be also worth testing a different location. Could be that there is some electrical noise source where you are testing now. The noise source could also be the computer..
But this is not very likely reason for your problems.
gently pulling and visually inspecting should reveal if the cable is broken. Sometimes just disconnecting and connecting the connectors helps.