At first, have you finished Act 1? In order to start Act 2, you have to complete Act 1 (V0.5)
1. When you click Start button in Act 2, you get "There's nothing here, are you sure you finished Act 1?" line?
2. Try to name your save differently (and yeah, in English layout - saying just in case)
3. Ask for help here (the game's Discord) https://discord.com/invite/xTX34vK74s
4. Why did you show me a Documents folder (on the screenshot)? Saves are located in (Ataegina folder) -> game -> saves. Do your saves (especially the final one) appear there?