[FAQ] Why does the night mode not work on my device?

It is mainly caused by an old version of "Android System WebView" if your device is Android 5.0 and above.
Reasily relies on it to display epub content. So you have to keep it updated in Google Play Store.
If your device is Android 7.0 and above, please update the Google Chrome app instead.
If the night mode still not works, please mail me the epub file with a screenshot, so I can find out the cause of the problem.