Thanks very much for your reply. Tried all of your suggestions without success. However, I have resolved the problem. Sort of, anyway. This makes no sense whatsoever but the HS103 I was having...

Hi. I have four HS103s all in the same room as my router and all connected to the same 2.4GHz access point. Problem is, one of the four will not work with Alexa. I can control it on my phone using...