Moderator, Iberia Airlines, Airport Lounges, and Ambassador, British Airways Executive Club
Join Date: Feb 2010
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Posts: 63,804
I am not seeing anything odd here, usually those seats would be available via Online Check-in on Amadeus where the seating module is straightforward and easy. Best not to panic with TAP when things look odd, mostly it all works.
I don't think you overbid, or if you did not by much. They do tend to leave a seat or two for last minute purchasers, and/or SeatBoost and/or check-in upgrades and/or the facility to use miles at the gate for upgrades. The usual range is $400 to $700, which if you add in the original economy fare gets you to $1000 plus, and that's the cheapest Executive fare for the Atlantic sectors if purchased in the first instance.