Create an account
There're several buttons to add an account: "Add account", "Restore JSON", "Add via Qr", etc.
Click "Add account" to create a new account.
After setting the account information click the "Next" button.
Click the "Save" button, the account will be created and the backup file will be promoted to download. Save the backup file to a safe location and keep it secret.
You can restore an account by restoring it from the json backup file.
Click "Restore JSON" button
Select your backup json file and fill the password of the json file then click the "Restore" Button. The account will be restored to the account list.