[SnineT]

Looking at your picture the droplink doesn't look like it's ever been touched from new tbh,

Reading what you described are you sure you weren't using the high beam assist function at the time without realising?

One other thing I had to have the headlights adjusted on mine when I 1st got the car and my high beam assist wasn't working properly for a while after, I put it down to the street lights at the time but after a while it was as if by magic they started to work properly again almost like the car was getting all it's "new" parameters sorted in place first.