Flying a multi-sector trip on TG, and trying to get an aisle seat for the first leg in J (was assigned a window) on the 747 which departs in about 36 hours from now. I get a message "1 error The seat map is not available for this flight. (8703 [99])" both on a laptop and the TG iOS app. The second leg where I have my preferred seat, the seat map *is* showing.

Any way around this problem? Thanks in advance!