If you were like me and didn't know about the double slider; if you drag the comment left, the first symbol is to collapse to parent, if you keep dragging a bit further, it goes to reply. Hope that helps!
Im on voyager now and I replied to you using the “…” and tapping “reply.”
You can also allow change the settings to show normal upvote and downvote buttons. (If your instance allows downvotes you can downvote on the down arrow button too. )
So. I know it was a short turn around, but I am sticking with boost and just laying the $4 for add free. It's the cleanest of all the other ones (in my opinion)