Hi Putu, I have not seen the connector you describe but can offer some advice. Apple logic board connectors are delicate, complex and vary in design. They are installed jointly with many other components in production using flow soldering techniques, and are very difficult to change individually - you may not even be able to obtain the one you need. Best option is for you to take a powerful magnifier and examine the connector on the board alongside the new cable to understand how they mate together. It may be some part of the housing, or connecting pins, have become bent or misaligned. You might be able to correct any damage by careful levering using a fine pointed tool, then keep gently retrying to install the cable until it looks to be seated correctly. Persevere with this and try not to force the parts to come together if there is excessive resistance. Hope this works for you..good luck!

My wife's Versa 2 had the same fault...button not stuck, moving, but having no effect. After trying all the suggested online cleaning fixes with no success, I went ahead and removed the screen using a razor blade to have a good look inside. The central operating pin of the left button had pierced the switch pad of the tiny circuit board behind. I could still make the switch work by levering on the pad edges. I managed to repair by cutting a thin rectangular metal shim (from the same blade used to open the watch) of correct width to drop in between the button pin and the switch pad. Button then worked once more as the shim spread out the contact area across the pad. I glued the screen back on with contact adhesive after removing all the old residue. An almost free fix, and should last some time. Before... ...And after