did you found any solution?

The problem might be that soft-close spring mechanism at the back end of the slide has slipped to back position. You just need to pull it back to front position and then try to attach the drawer to slides. See this video for one example: ukposts.info/have/v-deo/jICKjZmNmIeh2Z8.html

We bought kitchen cabinets from a small dealer. No brand name visible but most companies use similar mechanisms.

@@MikkoAuvinen Thank you, you were right with locking pin. I spent several hours figuring out how to release them, finally I've found a way with flat screwdriver. It needed just a little tweak between pin and front part and it came off the rail easily

Try to trick to open a drawer when something inside is wedged and prevents opening it: ukposts.info/have/v-deo/o5mErHl9eI9esmg.html

Muchas gracias y me alegra saber que mi vídeo fue útil.

The side bars are very robust in this drawer model and I as you said it's also safer for fingers.

Thanks for info. For me this method feels a bit violent, too. But unfortunately there's no such levers in our drawers. Pulling up seems to be the only way to remove them. Also this official looking video seems to give similar instructions for some other model so I guess that's somehow correct method for this kind of drawer mechanism: ukposts.info/have/v-deo/f2KFnGh5Z4OX0mQ.html

@@MikkoAuvinen having looked, my method is for ikea Maximera. I note that you have the Exceptionell. How to remove. On both sides left and right and underneath, you will find a cog mechanism. Turn towards yourself (located about 1½"/3.5cm from drawer front and the drawer should come out. It actually provides the instructions in the essembly leaflet which you would have received when you purchased it. Pulling any type of soft close/open drawer will eventually damage it.

@@MikkoAuvinen that link is not an ikea drawer, so the system to remove it isn't the same.

@@MikkoAuvinen this link is for your drawer ukposts.info/have/v-deo/fnVnaomCpomC12w.htmlsi=bGKIw70PMgO8J0Dc

@PetiteBluebirdgirl Ours is not Ikea, it's from a smaller vendor and has different mechanism. Tried to see if it has similar press and pull option but there's none. I see that the only way to remove this drawer is to pull it upwards.