Somewhat to my surprise--the $645 I bid was at the boundary between the yellow and orange parts of that Plusgrade gauge--TAP accepted my upgrade bid for tomorrow's IAD-LIS flight. Now I would like to select my seat, but when I plug in the confirmation code and my last name it reports "Booking not found!" (The exclamation point is such a nice touch, really.) I can't plug in the ticket number because it's a travel-agent-booked ticket and the e-mail TravelPerk sent doesn't include that. The reservation is there when I use the check-in function and shows the upgrade confirmed, but that page also says at the top:

"WARNING: No journey available
None of the journeys retrieved are available, please contact an agent at the airport"

I'm calling TAP, but Google's phone app estimates a 55-minute wait. What do you all expect will happen when the check-in window opens later tonight? I suppose I can always get to IAD earlier than I planned, since I will have Polaris Lounge access, but I'd rather get the seating squared away sooner.

Update: After “only” 30-ish minutes on hold, a TAP agent was able to get me a seat assignment; when I checked in without issue half an hour ago, I saw four other seats open upfront, including one of the “throne” seats that I then took. Perhaps I overbid?