Same problem here. Everything on Alexa is working, and my ISY99 is working through the app, but no Alexa integration is not working!! Dang. This not good. Why is this happening? Did we get an answer from before?
Hopefully now they know how to quickly fix it. Anyone submit a support request?
I have the same issue. My Portal Integration - UDI shows "Offline" & "Registered". My error log shows entries of "Sun 2021/09/26 01:34:16 AM System -140008 Portal-Dispatch:500" since it went offline.
This helped me. I had the same problem, and didn't think to reboot it. Everything usually just works! Thanks!
And by "This", I mean I did a full restore to the device that wasn't working, then rebooted both the PLM and ISY.