Today I got a this email by xandr

Thank you for your inquiry. We take privacy seriously at Xandr and appreciate the time you’ve taken to contact us.

Although we are unable to confirm whether we maintain any personal data relating to you, if the identifier you provided exists in our database, we will delete it.

Regards, The Xandr Privacy team

Proving that they ARE able to identify someone if they're provided the uuid2 identifier

i answered to the email and i received an automated email saying customer service email wasn't working anymore, so i went through the official microsoft xandr form and wrote this

"Hi, i previously made a data access request which was denied per your policy for which you even have a webpage showing the number of requests denied. i replied to the email but the customer service email was apparently shutdown and i received an email that said it wasn't working anymore. So i'm contacting you through this form. i'll paste my answer to your data access request answer here: "Hi, i'm answering to this email regarding my inquiry. Per microsoft xandr cookie policy you do use a cookie that is unique and can be associated with my datas https://about.ads.microsoft.com/en/resources/policies/digita... that cookie is uuid2. by giving you the value of this cookie, which is unique, you should be able to identify my data. I would like to receive the data linked to that uuid2 -if existing - in a zipped format if possible. I also ask for the data with that uuid2 - if exisitng at all - to be deleted the cookie value is [cookie value]

Regards Name Surname""