Why balls get stuck and then the machine turns off...?

The machines are designed to shut down automatically when an issue is detected to protect the machine. If and when this occurs, there will be a green flashing light sequence on the control panel indicating the issue. This "error message" is like a check engine light or dashboard illumination light on your car directing you to the specific issue.

Did any of you try the Lobster Sports Elite Freedom? I'm wondering if the $100 difference is worth it. Thanks!

The only difference is this one does topspin, flat, and backspin. The other only does flat. So really is your call on if it's worth it to you personally

I dont understand when you say sweeping triple oscillation. What does that mean?

Call them at 800-210-5992 (Toll-Free). They are very responsive. The manual details what to do to set up a triple. I am happy with my machine but the battery only lasts me a year and the remote fob barely works. Hope this helps.

Can anyone tell me if they have used this consistently on indoor clay courts? Does it hold up well?

I have not used on clay court but since it is a machine designed just to just throw balls without wiping the clay or dirt stuck up on the balls, so there is possibility of it not working as it should if the clay sticks onto the balls. Apart from that issue I don't see any reason why it should not work on a clay court.