Hi @t.koese were you able to find a solution?
In the meantime, I can send you a general answer, hoping that it helps.
The calendar card on your dashboard uses the same permissions as the Team calendar, so this is likely a permissions issue that can be fixed.
Since you're an Administrator, you can adjust these settings:
Go to Settings > Employee Roles and select your Administrator role, then click Calendars.
In the Team calendar > Time off section, check the dropdown menu for the group of employees whose time off should appear. Make sure it's set to show the entire company rather than just department or immediate environment.
Also verify that under Permissions > Personal Data, the View permissions for Public profile include all colleagues that should appear in the calendar.
After making changes, refresh your dashboard to see if the company-wide view returns.
Source: Help Center Article Troubleshoot your Team calendar
This covers how to fix calendar visibility issues. The article explains how to grant proper viewing rights and adjust the calendar permissions that control what appears on your dashboard.
Further Reading: Summary of the homepage cards
Let me know if this helps :)
Daniele