Air Pressure Issue

I ran into something I have never encountered with my CPAP machine last night. I turned it on and the air was blowing out the back of the machine where the tubing plugs in. It was very loud. It did still push air through the tubing but the pressure not right. But it seemed like the connection wasn't engaging when I connect the hose. I tried removing the hose and reattaching it to see if that would help but nothing changed. Anyone ever have this happen? If so what is the issue and how do I fix it?

Since the hose "plugs in", I assume it is a heated hose. There may be a problem with the connector on the hose or a hole in the hose. Have you tried another hose?