I checked the box, logged off and back on, changed zones, and leveled - all repeatedly, and I still don't have my AAs that should be auto-enabled.
make sure you are all access, and level 51+, they will not auto grant unless these things are true, if you are on a tlp they will not autogrant till oow or something like that for starting aas(luclin)
Autogrant is also level/expansion limited. Right now, it autogrants up to 105/EOK. Anything beyond that you have to grind...at least until the new expansion comes out and RoS AA should be autogranted.
So help us out here, what level? what server? how many do you have already? And what kind of account? All Access or F2p or Silver?