Alexa not seeing all devices

Hey folks - Has anybody had an issue where Alexa doesn’t seem to see all devices? I have the slider set to allow Alexa to access all devices. It throws the standard warning about my garage doors, but when I go to the Alexa app to create an “all lights” group, a random set of light switches don’t show up in the list to add to the group. The switches are in the ST app and functioning just fine. I’ve tried rediscovering devices from the Alexa side, but the same number of devices is found each time. Thanks for any help you all can offer.

I disabled and re-enabled the SmartThings skill and now I see everything again.

Yup. Started from scratch and all is okay. Thanks.