Unable to get Alexa to turn off lamp I'm Routine

Alexa can be hit or miss it seems. Have you tried the askAlexa app from here? There are several topics on it here.

Last night, I told Alexa to turn off backporch light about a dozen times and she kept replying there was no device called that. I cussed at her & she said thank you for the feedback. A few more tries and she turned off the light. Was able to turn it back on and off again without issue.