Is your trip completed? If that was one segment of a larger trip, the fare rules may have it priced low and follow on segments may be higher. If the full trip posted, and your base fare was $772 BEFORE taxes and fees, then yes - this is too low. Your base fare would be in the email trip confirmation (if purchased from AA).

If you chose the in-app or aa.com upgrade option for $$, it's clearly stated that LPs will not be earned. So while just about all of us here think it's ridiculous that they don't do this, it doesn't stop most people from taking the bait if there is value in it. On that same token, we could argue that there should be LPs earned for all ancillary spending like preferred and MCE seat and baggage fees.