[RPM90]

The US BMW site, under M performance suspension, doesn't show that option/suspension as available.

The standard sport/M sport suspension is 10mm lower than the standard suspension. IIRC the M Performance suspension is supposed to be 10mm lower on top of the sport, so a total 20mm drop from standard non sport suspension.
Your picts look like you have the wrong springs. That car sits like it's an Xdrive. Do the springs look new to you?
Did they give you the OEM springs?

Ride height/drop is dictated by the springs, not the dampers.
So it may be that you got sport/Msport springs with M Performance dampers.
That will work, but you now may be under sprung and over damped.
Can't say for sure as we don't know if the M performance dampers have any firmer damping than the M adaptive dampers, which also use the sport/Msport black springs.

I'm looking into M Perormance springs to go with my M adaptive dampers.
If those are the sport/Msport springs along with the M Performance dampers you should notice a big difference in handling compared to the non sport standard springs and dampers.