This site has changed the server (VPS) to operate.
The version of PHP goes up with the change of the OS.

OS AlmaLinux 9.2 (RHL 9 series)
PHP 7.4 → 8.2
MariaDB 10

In addition, due to SPAM regulations (OP25B), the mail system will not work until the day after tomorrow.
We apologize for any inconvenience this may cause.
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Nobuhiro YASUTOMI (MySite Users Webmaster)