Bookmarks

I have a NUC that hosts a plex server and my children used it to play audio books through the plex skill.

As the plex skill is no more I have set a raspberry pi up with MMFA which is network file sharing audiobook files from a NUC.

The MMFA server recognises the files as audio books and will play them (once you get around the hijack issue) but it will not bookmark them. It’s driving me nuts. I have rescanned, made sure file structure is clean, checked the meta data etc.

Anyone else having the same problem or got any solutions?