This is not a good way to manage and solve problems. Community work is more efficient when solving such problems.
Any news from the support ?
I did find a workaround to be able to get the three positions for the insert switch :
Put the mouse pointer on top of the switch, then rotate the mouse scroll wheel. This will switch between the three possible positions of the insert switch 
As it is the case very often when a large company decide to not support a previous generation hardware, contacting support is time lost. Most often it’s better to find a solution by yourself, if possible.