Everything is decent. If whoever told you that it was misleading and what not.. they should have already told you what their opinion of what to change and if not then just continue on with whatever it is your doing.
imo cover is kinda lame and the current synopsis although accurate does not match with the current story... in fact it lost meaning after a dozen or so chapters when the dark soul left.... so you could keep the current synopsis but modify it to accommodate the current story