The official deadline is the tipoff of your Saturday scrimmage/finals game. It is not supported or recommended to use points from Monday July 7, because The Button may not utilize draft order changes saved after that deadline, and the precedent has been that you do not get points refunded if you use them after the deadline. In practice, I’ve heard of other people doing that successfully depending on the time of day their economy is compared to when the draft is started. But I don’t do it myself and would encourage others not to risk it.
I agree with OP that it used to be possible to spend the last points on draft day, e.g. today, and I'm from Switzerland too! I expected to at least still be able to change the draft order, but when I logged in today in the morning it wasn't available anymore, whicht was the first time I experienced this. If I had known that beforehand I would have reduced my draft expenses yesterday already. It shouldn't be a big problem because I moved the most promising players on top of the list, but it's still a change without any announcement.
Wohooo we got an update we were promissed!!But now you're mentioning it , I think I remember having the option too.