According to this Reuters article, Poland is demanding approximately $1.3 trillion in reparations from Germany. If it wasn't Reuters, I would think this is just what many here call "Russian propaganda".
The question is definitely not about why they're demanding reparations like in this question, but about the time this demand has been made. I personally can't think of a less suitable moment for such demands. All NATO and EU countries including Germany are now united in their solidarity towards Eastern European countries like Poland, but at the same time, Poland making that demand is definitely not good for its relations with Germany.
Why now? Why has Poland not made this demand a year or more ago? Or why not wait at least until the current conflict is over to make this demand?