Teacher has no access and gets message "Geen groepen gevonden"

Description
When a teacher is logged in to Junior Cloud the following message is given : "Geen groepen gevonden"

Cause
School and group information is retrieved based on the logged-in account or already active cookies/settings from a browser session.

Solution:
Following solution are possible :

1. Close browser and start again

2. Delete cookies en other site information from browser
3. Start new browser in Incognito (Chrome) or Inprivat (Edge) modus

Figure-1: Error message