Echo - Stopped seeing any ST devices

All of a sudden Echo stopped working with ST. I removed the SmartApp, removed ST from Echo and then re-authorized. It connects and ST is shwoing all the devices that I want it to but Echo no longer detects any ST devices - any tips please?

What did echo say when you told it to “discover new devices”?

It finds a few that I have like hue and wemo but nothing connected to ST