Hello Nico, I've had the CEM25P for over two years now, it is a nice mount but it has some things that caused me some headaches when I first got it.
I keep the DST set to NO in the hand controller year around, when the time changes I change the offset to make the handset time correct.
I keep the meridian flip set to happen at 3 degrees in the hand controller and in Ekos I have flip to happen at HA> .02 Set hour angle units to hours.

On the park issue, I emailed iOptron and they replied there is no park command in the CEM25P. In the alignment module choose options and untick auto park. That will stop it from taking off to a strange position after polar alignmnet. I just use the "got to home" button in the indie driver panel.

You can play with your setup in your house, no need to waste time when the stars are shining!
To check meridian flip, setup all equipment, start kstars, start ekos then hit the start button. In Kstars choose a star close to the meridian(on east side), GOTO it and wait to see if the flip takes place as it crosses the meridian. If the meridian line is not showing, go to configure kstars - guides- and tick 'local meridian'. Now the line should show up.

I hope this helps

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