Alexa was working but stoped now

Hello,

Alexa was working and my Switch was OK
{
“link”: “https://myopenhab.org/rest/items/Tagmodus”,
“state”: “ON”,
“type”: “Switch”,
“name”: “Tagmodus”,
“label”: “Tag”,
“category”: “sun_clouds”,
“tags”: [
“Lighting”
],
“groupNames”: [
“gHaus”
]
}

but now it dosent work.
So i delete all items and disabled the skill in Alexa and myopenhab.
The i readd it and made the myopenhab Link but Alexa found nothing.
I restarted openhab. uninstalled the cloudconnector reinstalled. Tested the rest api (output is in the zop of the post)

Has someone any idee?

Joerg