Have bought online on Lot.com a full flex PE ticket on Polish Lot

DEL-WAR — R Class
WAR -CDG — Y class
CDG- WAR — Y class
WAR - DEL — R class

In my miles and more account booking shows “no upgrade possible “

Called the senator helpline and the agent also said the ticket was not eligible to upgrade either using E vouchers or miles.

As per below chart on the MM website the booking class is eligible for upgrade.

Seeking guidance how to proceed ?

Flights between Europe and India, North America, South Africa

Travel class booked Booking class. Upgrade to business in Miles

Premium Economy. P 20,000

Premium Economy A, R. 30.000