I have experienced better luck attempting OLCI at 23:59 and aborting if no upgrade is granted then trying again periodically as the flight gets closer. Last week both DTW-MEX and MEX-DTW were not EUA’d at the 5/3/1 day windows or at 23:59. However at some point between 23:59 and 08:00 local time both segments were EUA’d. Also today 30Jan, no upgrade DTW-IAH leg at 23:58, aborted and will check later. I will follow this through and report my results.

In 2006 as an NW Gold my success seemed greater when attempting OLCI at 23:59 and then trying periodically if no upgrade was granted.