it only gives you the skill points when you finish the Tier..
to be clear.. when you complete a quest, and the trader gives you an reward, and then gives you a 2nd reward (indicating that you finished that Tier of quests), this is when you get the skill points. Not when you arrive to the new trader.
the mod still works on my end, and i am using this version of the mod. i have not tested the commands recently, so if the quest names/commands have changed.. then you may need to use this on a new world or check the Quests.xml to find the proper names for those quests.