If you access latest chapters from the Hot Updates section in the Discover tab, the new chapters' badges will not disappear after marking them as read.
This is a known bug and our team is working hard on a fix to address this issue in the upcoming update.
We are truly sorry for any inconvenience caused. If you encounter any other issue, please contact us via our in-app support center or our email firstname.lastname@example.org. Our agent will get back to assist you shortly.
Affected version: Android 3.6 and above
First reported date: Oct 13, 2018
Resolved date: TBC