Arabic eBooks are not importable

Hello everyone, I have tried to import two different eBooks in Arabic in order to read them here, I had done the very same thing in other languages and everything went fast and correct, with Arabic it is unfortunately another story, though, as both books were not able to be imported. Is it because of the script? I could import books in French, Spanish, Polish, even Russian, so is it the script? Or where is the issue?

Thank you so very much for your help! :slight_smile: