Hi! I understand you’re having trouble saving new calendar entries in Blue Mail, and the create option appears greyed out. Let’s figure this out together.

First, to get a clearer picture, could you tell me:
- Are you trying to add events to a specific calendar account (like Google, Exchange, Outlook) within Blue Mail?
- Have you noticed this issue suddenly or has it been ongoing?
- Are other calendar functionalities, like viewing events, working fine?

Meanwhile, here’s a general approach to address the greyed-out create/save button issue in Blue Mail calendar on Windows:

1. Check Calendar Account Permissions
Make sure the calendar account you’re using is properly synced and has editing permissions. If it’s a work or Exchange calendar, sometimes admins restrict adding entries. Try:
- Going to your calendar settings in Blue Mail.
- Confirm that the calendar account is selected and synced.
- If possible, open the calendar in its native web or app interface (e.g., Google Calendar via browser) to confirm you have permission to add events.

2. Sync Settings and Refresh
Sometimes the app needs to refresh permissions or sync:
- In Blue Mail, try manually refreshing the calendar sync.
- If that doesn’t help, remove the calendar account from Blue Mail and add it again.

3. App and Windows Updates
Ensure your Blue Mail app and Windows 10 are up to date. Outdated versions might cause interface or functionality bugs.

4. Check Default Calendar Settings
If Blue Mail requires a default calendar to add events to, make sure one is selected:
- Go to Calendar settings within Blue Mail.
- Choose a default calendar for new entries.

5. Restart Blue Mail and Windows
Sometimes a simple restart clears temporary glitches.

If after trying these you still can’t save new entries and the button is greyed out, please let me know which calendar account type you’re using. We can then dive into specific settings or potential account restrictions.

Are you satisfied with this initial guidance? If not, I’m here to help you further!