Ok I have it working again. For me, the part that was not intuitive and even seemed repetitive or even unnecessary (however critical) was as follows.
My problem was that, at the very end, regarding the reopening of the UBr.html file (the local copy of unit browser itself) once it's saved to the "tripleA/downloadedMaps". Even though I read it in the instructions, it still is a bit counter intuitive because it appears to the user, to already be opening locally especially if it's on screen already.
Anyways maybe mention that the initial link (that you provided) you are viewing is not fully functional until you save it to the correct location and reopen it or it's link (the new bookmark).
Also might be helpful to tell them it's only fully functional when the address reads something like following.
I guess for me the bookmark part of it, was not saving correctly also. The saved bookmark for what ever reason was still opening from your link instead of from downloadedMaps. So not sure if that is happening to others as well.