Drastic change in machine behavior

The 2 screenshots (Jan 2 and Jan 3-4) show a dramatic change due to a large leak for 86% of the time. In addition, when I turn on the machine, the incoming air flow has a high pressure when I inhale, right away after turning the machine on. Because of this, I cannot fall asleep despite the ramp.
I tightened the mask, I powered the machine on-off and I replaced the mask and the tubing but nothing changed. The machine settings are the same for all days.
Any ideas?
Thanks for your help,

I found the problem: the humidifier chamber slipped out of place. I pushed it back and all is fine now.
Sorry for the posting

Don't apologize; your post may help someone else with the same problem.

your honor, i object!

asked and answered.

seriously, as miss e points out, it may help someone else in the future.