Hallo,
please start the clone operation of the DIM in VDASH (read takes a minute or two), cancel it before it asks you to write a copy. That way the server will have your non-original DIM content. Then I will check and may issue a corrected and proper version of your DIM, which will (likely) uncover the original mileage of your car.
Regarding your second question: automatic parking brake has been introduced in SPA/CMA platform, and there's no (hidden) version of that in P3.