Hi there! sorry for the delay. been through some personal stuff. i’ve just dropped an update for ipv6 support and I now working in order to have support for multiple domains. this change would allow to update ipv4 and ipv6 at the same time. thanks for your help!

I was on your point 4 years ago. After some research, I’m using Kobo + Calibre-web with Kobo Sync integration:

https://brandonjkessler.com/technology/2021/04/26/setup-kobo-sync-in-calibre-web.html