Missing Example Sentences and Incorrect Pronunciation Language

I converted a website into an EPUB and uploaded it to the Book Reader. When I saved a word, it wasn’t stored together with its example sentences, and each time I clicked on the word, the pronunciation played in English instead of the selected language. Also, words saved from the video platform do not always include their full sentences. Since these are being developed, I’m just pointing out these issues in case this behaviour is expected.