Cabin pressure loss past 30,000FT

Hello, so whenever I fly the 737-900, passing through 30,000FT I get a cabin pressure warning, any way to fix this?

Quote from Overloaded

Have you got the pressurisation panel heights set up correctly? I get moans at too low a level🙂

I’m pretty sure I do, I have the cruising altitude and landing altitude set in the pressurization panel. If i try to fix it by using the manual pressurization and closing the valve, the long pressurization needle will still go down.

Quote from SilentObserver OnlyEmojis

Are we talking about the mobile Android version here? If so, I flew on this plane yesterday and I didn't receive any warning message about cabin pressure.

I use the mobile IOS version