On my Druid he is trying to buy some missing spells for POT (for single, group and Zepher). When I go to the Merchant in Shadow Haven all I get from the Merchant is Actions speak louder than words, get out of here now. Is there a faction issue in Shadowhaven?
Are you at the right vendor? His name is Ealerel Tidebringer Does your server have Planes of Power open?
I'm assuming by POT you mean Plane of Tranquility? You could try this simple quest for a big faction boost in Shadow Haven https://everquest.allakhazam.com/db/quest.html?quest=1449