Am not able to select EC seats on the AMS-MSP or MSP-AMS leg using the app. I can select preffered seats and exit row seats (row 29) without any problem when using the app.

Have purchased M fare tickets and am SM Plat so either way normally selecting those seats shouldn't be a problem.
I logged on at the Delta website and was able to selct the seats there with no problems. After selecting them there and starting the app i can select and change to any other EC seats on the plane without any problems.

Afterwards to test/check i selected a non EC seat, saved and restarted the seat selection using the app but after the restart...again not able to select an EC seat using the app.

Galaxy S2
Android 4.0.3
Fly Delta 1.7.4