After moving to MariaDB, Jetpack suddenly gave me an error. I was not to able to connect my stats on WordPress.com from my parent site dashboard. As I could not solve this by myself, I went to Jetpack Support Forum and started the topic “Jetpack: site_inaccessible“. Three days later, I went to WordPress.com Japanese Forum and started “ルートサイトと昔のテストサイトのコンフリクト。” because I realized these two forums were complete different groups. But I was wrong. They belong to the same party. However, I did a multi-post because my writing was not enough (^_^;). Anyway, I had some suggestions from both of them.
- Jeremy Herve told me to use
define( 'JETPACK_CLIENT__HTTPS', 'NEVER' );. But it did not work. - Richard Archambault suggested me the issue might be related with SSL and told me to check my SITE_URL up. But, my SITE_URL was http://o6asan.com that meant no problem.
- naokomc told me at Stats Page it looked the owner had no dibs on the site when he could not connect to WordPress.com. So, I thought again it might be related with SSL that Richard told me.
- Then, I tried connecting after commenting
define( 'FORCE_SSL_ADMIN', true );out. That worked, wow!!
I got that the authorization might fail with define( 'FORCE_SSL_ADMIN', true ); on some conditions.
After the connection to WordPress.com, I rolled define( 'FORCE_SSL_ADMIN', true ); back. It is O.K. after the Authorization even if define( 'FORCE_SSL_ADMIN', true ); is uncommented.
I have never resolved in my mind why this suddenly happened. But, the issue solved.