Hi ​@Gerrit Schimmelpenninck, I’m really sorry to hear this — that sounds frustrating, especially after putting in so much effort. Sometimes content may appear missing due to accidental deletions, board history changes, or visibility issues.

If you haven’t already, here are a few things to try:

• Use Ctrl + Z (or Cmd + Z on Mac) to undo changes, if the board is still open.

• Check the Activity List in the bottom-right corner of the board to review recent actions.

• If you're on a paid plan, try restoring content from the board version history (click the board title > "Board history").

If none of those options help, I recommend contacting Miro Support directly — they may be able to assist further depending on your plan and account setup.