Update on the "isn't reachable from a real cube" message: my earlier explanation was wrong. The scramble was fine. The solver's own watchdog was killing the move-tightening step on some scrambles and the UI reported that as an unreachable state. Fixed today: the tightening step now respects its...
Good catch on Scramble again. That error means the scramble path handed the UI an illegal facelet string and the solver correctly refused it. Bug on my side, looking into it. Thanks for reporting.
On the net: yeah, I meant the small flattened net next to the 3D cube, not a Ring graph...
I've been building CubeSnap. Two photos of your scrambled cube - white center up, then yellow - and it reconstructs all 54 stickers and gives you the solution move by move on a 3D cube, with a flattened net view alongside.
iOS version is out...