Sure more than happy to help. As for the Duel Channel yes your rank is usually changed due to the Finals are being held and that is you starting Rank due to you missing the even. (In other words the other Duelist either lost or won to move around but not become Rank 10) The newest update has included a Season change with sleeping in the third room in Battle City’s Magician Corner has a 50% chance of changing the Season. (Won’t happen every single time though as it is random.) The main story line with the sister and the Unknown man unlocks most areas excluding from Ol bay which required you win a championship at least once. This unlocks the Duel Underground and other areas. Most areas are block by rocks which required Shoes which you can acquire from either purchasing them or from Arnold the Scientist who as you to do quest for him. You can take the ship after purchasing a ticket which allows you to go to Old bay island. Dungeons are accessed mostly in the Graveyard (again which requires Arnold’s help (Locate the Lab)) You give Captain Muiri you ticket for travel as you can see in the Images. Images are included for other help. Thanks again and Enjoy!
Radical Pein