I think this is the diagram, and I think no. 20 is the affected solenoid. https://www.lllparts.co.uk/catalogs/skoda/CZ/SUP/851/8/867/867086 Feeling guilty, and since I had to digest the dinner, I walked towards the garage and pushed the car forward, to open the lid and look at the thing, unfortunately the phone with 11% battery decided flash was a no-no so no photos. But I did see what at the end I have a twin little hook thing on both sides, which if you push it it feels resistance, and then goes down, like being spring loaded like written above. So how to test the system .... well as the seats were down since I have inside a bicycle carrier I need to put together, I said "go inside the boot and see" Ok, so first I went to the menu and activate the function, then I go inside the boot and press the remote with nonchalance .... Nothing, weird, so I extended my arm and press the button on the lid, and the boot closes. Now I realize that the stupid but SMART car would not let me use the remote since the gearbox was in neutral ... so I had to slither in between the box of the carrier and the roller, towards the rear door and from there drop to the ground like on a SAS demonstration ... in that moment I did realize the true error in having a double steakburger with fried egg and extra cheddar before these activities ... oh well. Put the car in P and restarted the exercise. Now the remote worked flawlessly. When the door opens, there is a little "ZIG" and the hook goes down, for like a fraction of a second, if you blink you miss it. I left my finger on it and it feels goes down, at the same time you hear the solenoid. The hook looks like on a plastic pin. Most likely someone not very delicate broke yours, possibily pushing the roller blind without first pressing it down to make it release the catches. But before that, try to follow my method - sans burger, better - and see if you can hear the solenoid trying to do something ....