Not receiving all datapoints from accelerometer using SPI

Please post pictures to the forum system directly and not some external image servers. If someone looks at this entry in a year or so the external links may fail.

The ADXL355 is a 3.3V device, you must not connect the SPI signals directly to the 5V signals of the Arduino, you may damage the chip. You must use level converters to connect this chip to a 5V Arduino. As the 5V of the Arduino are above the specs you might have already fried the chip. Get the level converter and a replacement ADXL355 board.