Bought the Litter Robot 3 Open Air, and received it. The WIFI Connect Kit was on back-order & took almost 9 months to arrive. Following the instructions to install it & get to the step to connect the small, rectangular board to the main control board. The NEW control board is missing the port for the 4-pin connector ! Double-checked the instructions & checked YouTube videos to make sure I hadn’t missed anything. Did the design change, or did I get the wrong parts ? In the attached photo, the original board is on the left, and the new board is on the right.
It appears that the instructions I received are for a different kit ! Trying again with the NEW instructions… 
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Hi @marksspencer!
You received an newer version of upgrade kit. New circuit board already contains WiFi chip and you received new version of DFI sensor.
Use these instructions to upgrade it: https://community.robotshop.com/blog/show/how-to-install-the-litter-robot-connect-kit-new-version