Yes, depending on the length of the body hair, some of it is torn off... at least this is the case with the Bluetens Blue of the 1st generation and the pads there... but this is not really a problem for me, as this can be reduced by pulling the hair off in the direction of growth or with a lot of patience ;-) Either the pads hold or they don't...

We have never had hair sticking to the electrodes.

I saw in a YouTube video that the pads have a kind of "sticky gel" on them and they can be easily removed without tearing off hair. But no idea how it really is. Just do a search on YT.

Just contact the manufacturer, it's not that difficult.

Unfortunately, we cannot answer this question because we have not been able to try it out in such a form. However, I'll post the question in the community, maybe a user can help you :-)