Originally Posted by ExpertFlyer Voice

Update: our GDS partners have confirmed that certain airlines are restricting access to seat maps for same-day departures (in some cases we've seen this for departures within the next 24 hours). So far the affected airlines are: BA, JL, DL, QR, ANA, CX, SQ, & AA (AA seems to be same-day only). If you've seen this for any other airline please reach out to our support team or reply on this thread. We'll update our error messages across the site for the affected airlines.

In the meantime, we're considering displaying our last available seat map (ie 24 hours before departure). We would clearly label when this is the case.