I'm afraid I dont support flatpak installations. Install the official binaries from https://calibre-ebook.com/download_linux
and if it is still not recognized, follow the steps here: https://manual.calibre-ebook.com/faq.html#how-can-i-help-get-my-device-supported-in-calibre
I'm afraid I dont support flatpak installations. Install the official /calibre- ebook.com/ download_ linux
binaries from https:/
and if it is still not recognized, follow the steps here: https:/ /manual. calibre- ebook.com/ faq.html# how-can- i-help- get-my- device- supported- in-calibre