I forgot to connect pin 1 and 3 (the blue channel) in the Sindri board.

It can easily be fixed by connecting to the 2 pads:
UTILITY -> PIN1
HPD -> PIN3

As UTILITY/HPD is routed to a pair of differential pins.

Although it requires high-level soldering skills to pull off. So get Brian/Martin to help and limit the number of boards you ask them to help with.