I am not to clear on what they mean by a problem with the electronics of the shifter. I attached the process for adjusting the shifter that they sold here in America. However, it appears what was sold in Europe and Asia differ slightly. I don't have a process to adjust those but what I would suggest is, if your's is different than what is picture take a quick video of what yours is doing and I will see what I can do. The video will help us get on the same page because what you are describing and what the mechanics are telling you doesn't quite line up to me.
Here is the procedure. If this doesn't work, let me know and send the video and we can go from there. Thanks
Images (Click to enlarge)
Friday, May 10th, 2019 AT 5:41 PM