VW Eos 2011 Deck opens only half

Moin Moin, bought my Vw Eos a year ago but after about 6 months the roof started to spin around. At first I did not take the small problems so seriously, until the roof finally could not be opened. So I went to the workshop. They looked at it and discovered a little water to the right and left in the trunk area. They also said that the cable trees were the problem and made me an almost outrageous offer. I found a different workshop on the Internet, very close to me, which had allegedly specialized in Eos’s. When I arrived there, however, I was told that the only man on whom this is true no longer works there… So I decided to do this myself. After cleaning the wire harnesses, the whole thing could then be opened at least again so that the boot flap opened completely and a So I was told by a friend who knows a little about it to change the top control unit once. Now I stand here, have three different top control units auprobated and at all the roof went up about the same way (and indeed like after cleaning the wire harnesses). It seems to me that a signal, for example, that the opening of the trunk valve is finished, is not passed on. However, I have also doesn’t really have an idea about the whole subject. Does any of you have any idea exactly where the problem might be? Or did anyone even have the same problem? Otherwise, I would also be happy if you could call me a specialist in the north.