Yeelight app is working fine - Alexa finds every lamp but nothing works

For the moment nothing of my 6 Yeelight lamps are working with alexa.

I deleted every group and every lamp.
After searching and finding every lamp in Alexa… … nothing changes.

I’m using yeelight test skill.

After reseting 3 lamps Alexa recognised the new name yeelight-bulb… but alexa keeps saying not online.


I deactivated both skills (normal and testing).
Activated them separately.
Nothing works.

I changed yeelight to Singapore server.
No the lamps are working.

No ist the problem that’s it’s not working anymore with Mi Home.

The problem should be the Testing Skill.