This is most likely happening because your Danfoss Link™ CC is not connected to Wi-Fi or your Danfoss Link™ app.
There are a few things you can try:
Make sure your Danfoss Link™ CC is connected to Wi-Fi. To check Wi-Fi connection, from your Danfoss Link™ CC do the next steps:
1. Click the main screen once;
2. Click "House Control";
3. Find and click "Settings";
4. Click "Wi-Fi and Apps".
5. If there is no connection, please follow this FAQ (I have no connection to Danfoss Link™ CC) to re-establish one