After the upgrade to Joomla 4 and PHP 8.0 we found problems with the current plug-in of Frank.
It takes a lot of free time to recode Frank;s plug-in. I had to do it in another way.
Now I had only to make a PHP wrapper around these scripts and than make a Joomla 4 plug-in. Also a learning curve..
I do not have a lot of free time!!! Do not expect fast updates or that I can help with feature requests!!! Free time is expensive.