What is this character that keeps showing up in the Kindle online previewer? https://imgur.com/7lTDQAT
I also get a warning when exporting from PubCoder that the file fails validation. I checked with Oxygen and EPUB checker which validated the file as OK.
I think I know what that "A" character is with the upside down V on top of it is. An extra space between words.
Those extra character spaces can sneak in there pretty easily. The validation error message was for the cover size which is too big for iBooks but this is exclusive to Kindle so no problem.
My cartoon ebook is out on Kindle. If you would like to see it on Kindle go here. https://bit.ly/saxnight .