The playoffs are definitely happening (subject to FA ratification, which will happen a very long time after it should).
Every club has agreed to take part except Chester, so far Even if Chester don't take part, the playoffs will still happen anyway.
I keep seeing lots of these 'boost the budget' type things from a few different clubs, including Chester. I see they've raised about £80k. While that's impressive, it reminds me of sickly football clubs who have pretty serious issues. It's the sort of thing we were fannying about with 7 or 8 years ago.