ZF AP Royal Oak 15450 repair?

AP Repair?

I purchased a 15450 from GeekTime in Nov. unfortunately the rotor has already fallen off. I did not wear it every day even, probably about 20 days in total.

I took it to a local watchmaker and he said that it’s not able to be repaired as these reps rotors are “glued” rather than attached by conventional methods.

Anyone have any experience with this or suggestions?

I am in Toronto area.