The following urls can be used to access the various static HTML screens implemented by Automattic.
/wp-admin/admin.php?page=automattic&static=main/wp-admin/admin.php?page=automattic&static=migration-cancelled/wp-admin/admin.php?page=automattic&static=migration-progress/wp-admin/admin.php?page=automattic&static=migration-complete/wp-admin/admin.php?page=automattic&static=start/wp-admin/admin.php?page=automattic&static=verifying