Hello,
Sorry to hear that you are having issues with the game. The default option is to click to proceed through the dialogues. There is also an option to auto-forward the text by using the Tab key, the mouse wheel, or Ctrl. Did you leave any of those activated while playing?
Regarding the broken picture, did you start a new save or reuse an old saved version from the demo? If it is the latter, I would recommend starting a new save.
If you continue to encounter these issues, please describe them to me in more detail by replying to this email :
doujinsoft.pro@gmail.com