As per one pair betting lines - this should be a fold on the river ..?
I only beat aQ through A8 plus any 88~TT as i would expect JJ+ to re raise me preflop - i think there aren't many of those hands that would be betting on river - rather they would check. Any As would be check-calling 2 streaks so there shouldn't be any surprise to see an A w low kicker improving on the turn or river.
Also in retrospect, assuming again that a turn bet is the best way to go (I’m treating this as a coordinated flop btw - maybe,this was a mistake). The turn bet could have been incorrectly sized ? Too smal?