Choose Always Connected, which is the first one.
The app will transfer your messages as a.
Select "Settings" and tap on "Account" under it.
In Viber Backup page, tap Automatic Backup and select the frequency of automatical backup and turn on Include Photos and Include Videos if necessary.
However, if unfortunately you do not have any backup and want to recover your recently deleted Viber messages, don't worry, you still have the way to recover them by using a third-party tool.
Click on Next, and then Allow the Connection.
You can also allow Video Calls by tapping on the homonymous button and choosing On.
That is why application developers provided the opportunity to create a backup copy of Viber chats.