How do I sync my Rebel Cloud Email calendar on iPhone/iPad/iOS?

You can set up your Calendar sync automatically through your webmail or manually: 

Webmail

Step 1.

In the top right, you will see a gear icon; click this. 

Step 2.

When you scroll down a bit, you will see "Connect your device."; click this. 

Step 3.

It will ask if you want to download the Application; however, for these steps you will have to click "Configure a specific device or application". 

Step 4. 

Here you will be able to follow the steps it provides by:

• Choose which device you are using
• Choose the application in which you want to set it up - please select Add CalDAV Account
• This will give you one of the following:
  • A QR code, which you will have to scan with your phone, it will help connect it automatically
  • Username and password, with a provided link to help log you in. 

Manually

1. Tap Settings.
2. Select Mail, Contacts, Calendars.
3. Tap Add Account.
4. Select Other.
5. Under Calendars tap Add CalDAV Account.
6. Enter the following details for your account:
   • Server: dav.rebel.com
   • User Name: The email address that the calendar is associated with.
   • Password: The password you use to log into Webmail.
   • Description: Give it a name so it is easy to recognise.
7. Tap Next in the upper right corner to verify the account.
8. Tap Save in the top right corner.