FIXED → 
NEW BUG DISCOVERED - 07/15/2022
Hello folks!! Hope you are all enjoying the blueprint.
Today I’m reporting a nasty bug in the configuration.
It only happens when you don’t indicate a Appliance Suspended entity (which I indicated as optional). When this condition is met, the automation becomes unresponsive and no longer indicates when the socket is unplugged.
A small and almost untraceable error is shown:
> Error: In ‘not’ (item 1 of 2): In ‘template’ condition: AttributeError: ‘list’ object has no attribute ‘lower’
This behavior is not wanted and will be fixed very soon in the next release.
If You are experiencing the problem, the only advice I can provide at the moment is to create a dummy input_number that will indicate a value of 0 and assign it to the Appliance Suspended entity* entry in the visual configuration of the blueprint.