You can give us access as following:
Step 1: Retrieve the Microsoft Advertising manager account number
To do this, log into your account at https://ads.microsoft.com/. At the top of the menu bar, you will find your Microsoft Advertising manager account number. Please provide us with this number so that we can request access through our administrative account.
Step 2: Confirm the access request
After we receive your Ads account number, you will receive an access request by mail. Please accept this by clicking on the "Accept Request" button.
Feel free to contact us if you have any questions.