Copied from anther thread. It does not appear that EUA is working at all. I have been monitoring flights I have this week and nothing is moving. Has anyone else with flights this week checked the seating charts. With less than 48 hours before the first trip, it is certainly suspicious that only 5 of 32 available FC seats are filled.
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I've been monitoring two flights I'm on Wednesday, both "V' class, PHL-IAH-OAK (738/739) Theoretically, EUA should have run 5 days out, on Friday. Following are the number of FC seats assigned/total # FC seats.

Fri Sat Sun Monday
PHL-IAH 2/14 2/14 1/14 1/14
IAH-OAK 3/18 3/18 4/18 4/18

So it looks as though EUA is either not running, or perhaps if it is running, it is looking to assign FC seats to only high fare clases and there are none at this time. Obvioulsy, my V fare isn't high enough.
Another theory (possibility) is that CO does not assign a lot of R seats, so that there are none to upgrade into. Given the city pairs and the fact that these are Wed morning flights, its hard to believe, that if the system is working, that CO would not have assigned a reasonable # of R seats to these flights.

Edited to add (Monday) that I serious question if EUA is down. I have also been following my return this Friday and there has been no movement there. OAK-IAH has stayed at 2/14 and IAH-DTW has stayed at 2/14. The only flight that has cleared is Friday DTW-PHL and that is on NW metal. Why am I not surprised