How to make a safe backup of the wallet?
The text in the wallet warns that saving the seed is not enough. See image below.

Is that correct? If so, where is the data directory to save?
1.) Search %APPDATA% if on Windows.
2.) Navigate to "local" folder.
3.) Copy and paste byteball folder. (DO NOT DELETE OR MOVE IT.)
4.) Place the byteball folder in selected backup location with the paste function.

Why aren't there any single wallet files like with electrum or other bitcoin wallets which i can save to backup ?