Jim,
This morning both buttons worked just fine. It seems there was some sort of electrical connection issue in the switches that wore off after many presses. I saw the blinking (once or twice) of the power light today that let's me know the robot is ON. However, this afternoon the Start/Stop button had problems again. Rapid pressing again did get it to turn ON, so I'm thinking it will just improve over time.
If others have problems initially with the buttons on the control box, just press them firmly many times in rapid succession. That should get you going.
For the dust, I don't really mind that it takes a few runs to get it up. It is such great help to me versus manual vacuuming that I don't mind it at all. I do need to help it out a little in areas like corner platforms, steps and sharpish pool corners, but I just brush those to the bottom and the bot gets them there. Yes, I use the optional Fine Filter Canister (it is truly EXTRA fine!) and recommend that to others if you have fine stuff to vacuum up.
And the filter is so fast & easy to clean! Just spray it briefly with water and everything just slides right out.
Until I make or buy a caddy, just a couple of 7-inch scrap 2x4 pieces side-by-side works well to elevate the treads and brushes off the floor for storing out of the pool (and in the shade).
Thanks Jim, for your robot (and other) expertise helping everyone here.