Echo/ST failing all of the sudden

I’ve recently set up home automation with the echo and ST hubs controlling approximately 8 different switches and everything was working beautifully. However, all of the sudden this morning, alexa can no longer control any of the light switches. In the Alexa app they are still all discovered and when you ask her to turn on a light she says okay but then nothing happens. Inside of the ST app, all of lights still respond appropriately. Ive tried to restart the echo as well as the ST hub without luck. I’ve also unlinked the echo and the ST hub and reset everything up but with exact same results. I’m not sure what else can be done at this time. Does anyone have any thoughts or suggestions why this would all of the sudden begin failing this morning?

You’re not alone. Look here: Amazon Echo not working