I think Afghans have appreciated whatever good Pakistan has done in various areas, for example not restricting Afghans children to pursue education in Pakistan, be it private or government schools. If you have not heard any appreciation from Afghans, then let me appreciate it on their behalf here.
Now why some of this good actions fail to find a soft spot in the Afghan side, is frankly simple, because all these fail in comparison to the Talis that are responsible for the carnage on the Afghan side. The common Afghan is saying that we don't want your wheat just let us be and stop supporting Talis.
here is a simple example, if I buy you a nice cold ice cream when the temperature is hitting 40s and then I pay some other rascals to ambush you while you are eating the ice-cream, so which one will you remember the effort of me buying an ice-cream or me buying someone behind you back to ambush you ?
here is what sartaj aziz was blabbering sometime ago.