u/Garsantos_Truther

Hey y'all, I use calibre to send documents to my kindle; I notice that every now and then, I'm unable to modify the font on documents I send (when I use my kindle to change fonts it doesn't work). This doesn't happen to every single one I send, just some of them. I send them using the azw3 format. Is there a specific setting on calibre I can toggle to ensure I'm able to change the font on my kindle? Any suggestions are welcome. Thank you!