@Rocket626 Hello,
Sorry for the delayed response. Currently Tapo P100 V1 & V1.2 use different firmware.
We created a thread for the feature you requested, Tapo P100 is listed as planned, we will update on thread below if the feature is added, you could subribe the below thread to get the updated information.
Tapo Plug Set Default State after Power Failure is Now Available (Tapo P100 V1.2 / P110)
https://community.tp-link.com/en/smart-home/forum/topic/275292
If your model is not listed, feel free to leave the Hardware version and Country version (UK/ EU etc.) of your device there and we would record your feedback for further evaluation, thank you for your understanding.