Im quite surprised to see the dev build out already
1.6 was just released! bukkit will update in some weeks.
Were you put the commands for the purchase put /broadcast {player} has just bought (item/rank name)
Cant find nothing.
Dont give up son, never give up.
Bungeecord has been abanoned you can try lilypad or even buy a personal scripted plugin of a other Network server. I really dont know any plugins...
Griefprotection is over riding worldguard try looking at the griefprotections config.
Did you try doing /plugins and to see if it says Factions
You can just search how to make bukkit plugins and there will be very easy tutorials there, you can start with making simple plugins like /sun...
Separate names with a comma.