Yes that is the case currently – the issue predates me becoming involved in trying to keep the plugin working – is to do with how the options get set and saved
PHP Deprecated: Function options.php was called with an argument that is deprecated since version 2.7.0! The mbtng_url_to_admin setting is unregistered. Unregistered settings are deprecated. See https://developer.wordpress.org/plugins/settings/settings-api/ in /home/xxxxxxxxx/public_html/xxxxxxxxxxx/wp/wp-includes/functions.php on line 5697
And repeated for all 6 of the options available in the plugin. I am trying to figure out how to fix this, but it might take a while, so all I can offer right now is to use the WP Downgrade | Specific Core Version plugin
https://wordpress.org/plugins/wp-downgrade/
to go back to WordPress 6.2.2 and stay there awaiting a resolution.
Sorry I don’t have better news
Roger
