Is anyone else having this problem?

frontiersmen don't have houses, they are around campfires. the hunting society uses the houses. as to that particular quest the answer is yes. once you see the horseman its done. its possible you just need to find another site where they are to get the next
quest to start. as to why you have no icons, i have no idea. for myself i know that sometimes my map icons disappear only to reappear later on. its annoying but it happens

Mine seems fine. Cant you push it in at all?

Having the same issue. If I'm lucky enough to sign in, I can't do anything that runs through Xbox live,, as it disconnects me right away. Started have issues last night.

I've had the best luck just using it for impact.

I've gotten kills setting the distance with an object that I think is the right range. the problem is, I'm not sure if it explodes at the distance you set it or if it is supposed to travel slightly further.

If you were trying to get it to explode just inside a window, the only thing you have to set the range is the walll outside, so my guess is it will travel slightly further than the set distance. But I can never tell ........... so I found it easiest just
to shoot an object or wall near the enemy I'm after ... they do explode on impact. Thats the only thing I know for sure.

thats what i been doing usually near a group of guys. i would be a good distance away and aim a few inches over them but still get no kills not even hit markers