I had an issue that confounded me for a while.
I couldn’t make connections where shown in green.
- Bottom copper layer was selected
- I had the “edge cut” layer invisible
- Would repeatedly get an error “Cannot start routing from a graphic”
After some time I turned the edge cut layer visible and saw the trace I was attempting to create was right on top of the edge cut line.
After I moved the edge cut line away from the area I was able to add the copper traces.