Admob showing already exist as some mail

It sounds like you're experiencing an issue with AdMob where an ad is already existing with the same name as an email address.

To resolve this, you can try the following:

1. Check for duplicate ad units: Make sure you haven't created duplicate ad units with the same name. Go to the AdMob dashboard, navigate to the "Monetize" tab, and check if you have any duplicate ad units. If you find any, delete the duplicates.
2. Use a unique ad unit name: When creating a new ad unit, make sure to use a unique name that doesn't match any existing email addresses. This will help prevent conflicts.
3. Check your email address: Verify that the email address you're using to create an ad unit is not already associated with an existing AdMob account. If you're using a personal email address, try creating a new account with a different email address.
4. Contact AdMob support: If none of the above steps resolve the issue, you can reach out to AdMob support for further assistance. They may be able to help you resolve the conflict or provide additional guidance.

Remember to always follow AdMob's policies and guidelines when creating ad units and managing your ad inventory.

If you have any further questions or need more help, feel free to ask!