Is this a Reflowable text ePub or a FXL layout ePub?
Which version of InDesign do you have?
Moving to InDesign EPUB forum
InDeisgn CC 2017
Have a look at these online video tutorials from Lynda.com, you'll find them invaluable (you can get a 10-day free trial):
https://www.lynda.com/InDesign-tutorials/Creating-Fixed-Layout-EPUBs-InDesign-CC/169624-2. html?srchtrk=index%3a5%0alinktypeid%3a2%0aq%3afxl+epubs%0apage%3a1%0as%3arelevance%0asa%3a true%0aproducttypeid%3a2
I`ve found out what happened. I had all texts rasterized during export, and I think when Indesign exports files, it first turn it into graphic then tries to "read" those texts.
But thank you for help it lead me to an answer