Epub with paragraph and character styles missing
I'm trying to export an indesign document which is a long 300+ page file to epub. I edited everything with more paragraph and character styles than I had in the file destined to pdf export, so as to not have style overides, and I added export tagging info.
When I check the results with any epub viewer on my computer it looks great. When I check with Sigil, the css and html outputs are a bit messy, but it previews fine (the only error I still have is with the endnotes not linking, but I've already seen another thread on that).
But when I open it with my ereader, it's never good. What happens is that one or more paragraph/charater styles simple doesn't appear. In the last export I made, any style that used semibold didn't appear (the text itself disappears). Afterwards I changed every semibold to bold and no paragraph text appeared at all, except for titles. Before, the chapter name style didn't appear. It appears to work in turns, with the result of every time I export, something is always missing or failing.
I'm using montserrat fonts, and I know the ereader is generally reading them, because they often appear correctly.
I have to say I'm entering despair mode, so any help would be really appreciated.
