Straps and Power
Does the metal tab have to make contact? Sometimes on the hands it doesn’t seem to.
Q.1.] move the metal tab across the palm until the metal tab touches the left or right side of the palm where the contact is to the skin. Keeping the contact in the middle will raise the button so there may be a disconnection. The entire strap is conductive, and also I will mention the flex straps provide a larger stainless steel area for palm contact.
Do I need to unplug it to turn it off?
Q.2.] You do not need to unplug machine each day. The Red Light is a power indicator, that shows you are connected to the power adapter.