Originally Posted by
irishguy28
The seat map doesn't usually "close" this far in advance.
This normally happens a day or so prior to OLCI opening, when the flight is handed over to airport control.
I'm wondering what this means for your flight - it sounds that it may possibly be overbooked.
It happens from time to time as flights are overbooked, even when trying to make a dummy booking seat selection will be unavailable.
If OP can provide the exact date, someone with EF access can try and have a look at the load factor, alternatively try to make a dummy booking with FB status.