As I’m sure some people have seen on the thread about the Alexis skill for ISY and some issues people are having, I had a long conversation with Amazon and they confirmed that the Alexa+ does not play well with some of the third-party skills. Especially with home automation.  
 

I had a few lights that were not responding to Alexa commands and also I have the Harmony hub app and that stopped working as well  

 

After talking with them, I had customer service. Take me off Alexa.+ and bring it back to the regular Alexa. As soon as that happened, everything started working normally again.  
 

If anyone looks at the other thread, I copied what they said in their text and posted it there. 

Harmony hub will work with Alexa+. I had to remove the Harmony skill and relink it to my Alexa account and it works without issues now.

I briefly upgraded to Alexa+, only to quickly discover the MobiLinc and Lorex camera skills stopped working. I simply asked Alexa to uninstall Alexa+ via a voice command.

4 hours ago, tlightne said:

Harmony hub will work with Alexa+. I had to remove the Harmony skill and relink it to my Alexa account and it works without issues now.

I tried that multiple times under Alexa plus and it didn’t work. Why reverted back to standard everything was fine.. I’m glad it worked for you.

I changed to Alexa+ about a week ago.

Recently, voice commands seem intermittent - "Alexa, turn on bedroom lights". Sometimes it works, sometimes it doesn't. Alexa makes the "ding dong" sound acknowledging the command but it's often not executed.

It might have started before Alexa+ but I don't recall to be certain.

Does anyone else have a similar experience with voice commands not executing at all or intermittently?

The scenes always work if I use the UD Mobile app so I don't think it's an Insteon communication issue.