Yesterday, I sent my report for your support.
But, I found out it might be a real reason a short time ago.
At WordPress.com, my main site has gone. I don't know why such a thing happened. My main site URI is http://o6asan.com. But it disappeared and my old test site name showed up. Maybe this is the real reason why I cannot use Jetpack.
When I registered my domain to WordPress.com, it was easy. However, this time I cannot find the link for it. Though I ask a wrong person, can you tell me how I can fix it?
Thanks.