[AaronFarley]

Код:

if(PlayerInfo[playerid][pAdmin] >= 1339 && PlayerInfo[playerid][pShopTech] == 1)
    {
        SendClientMessageEx(playerid, COLOR_GRAD2, "You are not authorized to use that command!");
        return 1;
    }

You have used the wrong ">" bracket. Anything above 1339 will be unathorized. anything below can use it.
Change ">" to "<"