Nivona Caferomatica 850 power button hangs

Good evening.
My fully automatic machine, which is almost 2.5 years old, has a problem.
My power button no longer runs smoothly. It's hard to get in.
The pressure point is weird, too. My standby button doesn't have the main switch.
What can I do about it?
Do I somehow get it off so I can see if there's dirt somewhere in between?

You'll have to upgrade it...

Is there something to keep in mind?

Don't break anything.

Haha. That's why I ask for.
Is it just plugged in? How do I get the button off?

I can't tell you exactly how to remove the button now. As an emergency measure, a spray of contact spray into the cracks would certainly work.

Simply google for instructions for this device... The devices are otherwise related to the Siemens S series, so they are opened in a similar way.

If you don't dare to open this device then leave it best with contact spray and maybe after-spray with compressed air spray so that everything becomes free again.