It looks like everytime I set the WAKEUP or AUTOSLEEP Mode I cannot Read any Register anymore.
The SO of the ADXL362 is always set after that. Communication is working before (Read Device ID, or other Registers).
Also the Soft Reset doesnt work I have to Hard Reset the Device to be able to read/write again.
SPI works on 4MHz and there are more Devices on the same lines.