Support

December 16, 2016 at 7:36 pm

Before you reactive Event Espresso, you can remove version 4.9.21 and replace with 4.9.23 (available to download from your account page).

4.9.23 removes the redirect to the About page which quite likely might be related to the redirect loop on your site.

December 19, 2016 at 8:52 am

Can you try adding this code to a custom functions plugin?

// stop redirect to about page after update
add_action( 'init', 'ee_remove_about_ee_redirect', 4 );
function ee_remove_about_ee_redirect() {
    global $pagenow;
    if (
        ! in_array(
            $pagenow,
            array( 'wp-login.php', 'wp-register.php' )
        )
        && class_exists( 'EE_System' )
    ) {
        remove_action(
            'AHEE__EE_System__initialize_last',
            array( EE_System::instance(), 'redirect_to_about_ee' ),
            9
        );
    }
}