When to apply for eUps
 

Less than 5 days to flight on Air Canada App and yet on eUpgrade webpage it won't let me try to eUpgrade. Anybody have experience with this. I will note the first Leg is on ANA so that may be the reason.

The upgrade windows are based on each segment.

Requesting eUps becomes available exactly x days (x=3,4,5,6,7,etc depending on your status level) before the scheduled departure time/date of each Air Canada flight you are on.
Hence if your first flight is not on Air Canada, the eUpgrade window won't open when it is x days before your first flight.
You need to wait till it is x days before your actual AC flight.

Thank you

Just confirmed my first TPAC upgrade to business class, also used up the last of my eups for 2016! ^

What's you status?

E75 now, was E50 last year. It was OK, I did a lot of domestic travel before where they were used and only two TPAC which were PY.