"Reconfigure" is grayed out

[dya]

When I select a virtual machine from [Infrastructure] - [Compute] and try to click "Reconfigure", it is grayed out and I can't click it.

Why is that?

*This is a machine translation, so I apologize if it is difficult to understand.

[dya]

The status is now "On."

I think the status was originally "Provisioned."

I'm also curious as to why it's "On." Does this seem related?

[dya]

When I check just now, I can now click Reconfigure VM. I don't understand why this is possible.

I'm curious about the difference between the statuses "Provisioned" and "On", so I would like to know what the difference is.
I would also like to know in what cases "Provisioned" changes to "On".