How to fix stuck sensor reading?

I had a perfectly working SPG30 co2 & voc sensor and decided to test another one with the same device. So took out the working one, tested another, then put the working one back. Now, CO2 and VOC reading seem not to work at all - with values maxed out. Any ideas how to fix this? reset? Both sensor and device?

Maybe a photo will help us diagnose ...

Photo included in original post above.

Maybe I missed it - but photo of the connection of the sensor to the particle - if it was working and now is not, can only be caused by two things (excluding code)

  1. The sensor was damaged by handling during the process
  2. The sensor was reconnected incorrectly

I am hoping its a bad reconnect. Going to check.