To chat with other users in the app:
Log in to your UG account in the app.
Find the user using Search.
Tap on the Message.
Keep on chatting
You'll find all your conversations on your Profile → Messages.
If you have a new message, you'll see a notification on the main app's screen.
Delete a chat
To delete a chat:
Go to Messages.
Tap on the trash bin icon.
Note: You should have a verified account to use private messages.