In March 2020 Sensirion has released a new version of the SPS30 datasheet. It shows that over the past year (or so) it has slip-streamed new firmware with new functions ( like sleep, wakeup, device status) as well as update / more information to existing functions. The SPS30 library (https://github.com/paulvha/sps30) has been updated to version 1.4. It does not only solve a couple of issues but mainly takes these new changes into account. Depending on the firmware level on your SPS30 you can take advantage of them.