I don't recall anyone else claiming to be an expert, but yeah there's been some confusion going around. I've dedicated my life to Germanic Studies as a whole both on a collegiate level and a personal one. As I've said before, this is my religion. A simple invocation for Odin, or any god for that matter, will generally consist of calling out the god's name followed by several kennings like Raven-God to further strengthen the god's archetype in the invoker's mind. For example, "Hail Odin! Allfather! Raven-God! Battle-Wolf! Wielder of Gungnir! We call on you!" It's similar to how Christians often call Jesus the King of Kings.