Originally Posted by
Matt4
The blocked seats 72 hours prior to the flight appear blocked on Expertflyer but are usually selectable with online check-in.
EF's map is simply the result of its attempt to interpret data used (internally) by QR. It is the manifestation of a mismatch between systems which were not built to interact in any functional sense.
The interface between QR and its passengers retains its functionality regardless of EF practices.