I am so sorry, I’ve missed this thread.
Dugi has got the main programmer to look at a few things with the addon, the items button seems to work fine in PTR 10.0.7 and 10.1.0 but not live for some reason.
For the scale when “CTRL + right click > Arrow Scale” I have asked a question to Dugi about this, and he says “Icon Arrow doesn’t change scale at the moment”

“Waypoint is on a different floor”
This is normal, it’s indicating that the waypoint is in a different map.