I chose the wrong class after the ascension

I completed the Sehee trial, and after that, I didn't get the new class "Smith of Kitava." Instead, there were two class options to choose from, just like before the 0.2 update. I did everything on the new league right after the update. I went to investigate the issue online. I ended up picking the Titan class. Can you tell me what to do? Is it possible to change my class without having to redo everything? The class was chosen because the game crashed from the server, and it automatically assigned me that class. Why didn’t the new class appear, and why was one chosen for me instead?