To enter recovery mode:
- Power off your phone
- Press and hold vol up and power key until you are in recovery mode
- use vol up and down to navigate
- select Wipe Cache Partotion
- press power key to confirm
- click yes
- click reboot system
Try again and see if you can get into Chat settings.
To be honest, I don't know how to help you with this. I just rarely even use the phone to contact someone. Most often I use https://videochatomegle.com/ in order to communicate with someone and get acquainted. This is a great way to find new acquaintances. After work in the evenings, I always relax in this chat.