I think Alexa is getting deaf like me. The last few nights I've had to repeat several simple commands before she finally carries them out. For example, "Alexa, Porch Light off." The blue ring on the Dot lights up and I think Alexa mutters something, but nothing happens. I'm always within 10 feet of the Dot when talking to Alexa. It is getting frustrating to have to repeat the commands before she finally gets it right. Maybe she is going through her teenage revolt years. She better start behaving though or she might get kicked out of the house!

ETA: I always make sure there is no other talking going on before giving a command to Alexa. That is, I mute the TV or whatever audio source that is on. It doesn't take much to confuse her.