[raygj]

check for latest WiFi updates and install.
1 open a book to read.
2 the first time you tap in centre of screen
3 on bottom right-hand side tap on 'A' .
4 on the lower right hand side of the Typesetting line tap on 3 vertical dots.
5 try adjusting the various settings.
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if you change font size(number of words per line), is the hyphenation still at the end of the line or has the hyphenation moved with the word to the body of the line?
if not still at end of line and has moved with the word to the body of the line then it's the formatting that is inside the individual eBook file causing your problem..
Years ago ,I had problems with displaying some of my purchased eBook titles(similarly to you).I now always run my ebooks through the Calibre 'convert eBook' menu item.This is normally used to change the ebooks format(file type)E.G.from .pdf to .epub or from .awz3 to .epub but you can just use it to convert eBook from .awz3 to .awz3 or convert eBook from .epub to .epub .As it does the conversion it usually corrects/fixes any non-conforming formatting to the industry standard formatting .If this conversion process errors and halts conversion then I select the book in calibre and mouse right click and select edit book then I select tools/check ebook and select the autocorrect option. Try this link for more information <https://www.mobileread.com/forums/forumdisplay.php?f=166>
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If it is text formatting errors (words joined or permanently containing hyphenation regardless of their position in the line) then these errors are in the original authors text file.
I fix these by using Calibre option to convert the file to docx file.
right click on book in calibre library listing and select convert books/convert individually
top right hand corner change Output format box to DOCX
bottom right hand corner click OK
right click on book in calibre library listing and select Open containing folder
then 'right click/open with' and open the .docx file with LibreOffice Writer and use the main menu/Tools/spell check,word search & replace and the main menu/Format options to correct book.
use LibreOffice Writer main menu/File/Export As/Export as EPUB to save the corrected eBook.