If you are supported user, you can contact with Adobe Technical Support Engineer (TSE) by ticket. If not, you should ask your Administrator user of your Org first.Please confirm below URLs. Customer Support Delegateshttps://helpx.adobe.com/experience-cloud/supported-users.html Submitting an Analytic...

How about use a purchaseID when purchase? Than you could ignore showing purchase event on report.Please check below.https://experienceleague.adobe.com/docs/analytics/implementation/vars/page-vars/purchaseid.html?lang=en

The request of DWH is still exist even the user who created a request is deleted. Regards