Again: tail cover does not open!

Hello, the search doesn’t bring me great further, the following problem: Cover at the back does not open, whether with operation inside, remote control or micro switch in the VW sign. Border conditions: no automatic opening/closing via hydraulics – normal series! mechanical unlocking in the VW sign does not clamp/functions! WD40 looks (perhaps) straight. When pressing the FB: turn signal, i.e. probably cable breakage. But I heard today, where still everything worked a rattle through a loose / broken part in the left part of the lid. Put on the lid and then sensitive (with force 🙂 turn the key unsuccessfully until now 🙁 Helps only the axe or can opener!? I am grateful for any help!