Just got a reply from Plankton Electronics:

”this is a DIY unit.

  1. There is no serial number (look at the white box it is blank, we write there the S/N manually).

  2. Some soldering paths are not professional, we don't offer that quality.

  3. One of the headers is melted. We will never sell that.

  4. The red strip box is painted bad (we always cover it all)

  5. Guillermo Cantalapiedra was one of the bakers of the Kickstarter campaign on 2019. He pledged for the 3 modules DIY kit.

I'm sorry if he sold you something that is not what he claims it is.”

Adding more photos for reference.

The seller calls himself "gcanta" on Modular Grid.