@duck Thanks for sharing your photos and assembly video for the Niryo One v2 robot. I had a very similar building experience with my recent version 2 robot assembly. My kit was missing the exact same parts (aluminum tubes, toggle switch, and power wire) and Niryo promptly shipped out replacements.
When I first powered up and tested the robot, I was having motor connection errors and I found that the black plug connectors on the wiring harness were not making good connection. Some of the wires for the pins were not seated fully in the connector. Once I pressed the pins and sockets further into the connectors, the motor connection error went away.
Looking forward to more videos once you get the robot working