Good afternoon Dr. ________,
It is not feasible for us to allow your complete ownership to the ads we've built and manage with our shared management account. It has been determined that such an accommodation is not within our operational framework.
We wish to emphasize the importance of our business relationship and express our hope that this particular stipulation will not become a hindrance.
Kindly provide guidance on the preferred course of action moving forward. Our intention is to sustain our working relationship and continue to provide our services to you.
Thank you for your kind and professional communication on this matter. Please let me know if you have any other requests or questions.