diff --git a/internal/config/config.go b/internal/config/config.go
index 2cae791..a771cf0 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -40,6 +40,7 @@ type AppConfig struct {
 	SettingsReviewed        bool   `mapstructure:"settings_reviewed"`
 	EnableAlarm             bool   `mapstructure:"enable_alarm"`
 	EnableLinkOpening       bool   `mapstructure:"enable_link_opening"`
+	LinksToOpenCount        int    `mapstructure:"links_to_open_count"`
 	UseAttendanceJounralApi bool   `mapstructure:"use_attendance_journal_api"`
 	UseCustomBrowserCommand bool   `mapstructure:"use_custom_browser_command"`
 	BrowserOpenCommand      string `mapstructure:"browser_open_command"`
@@ -79,6 +80,7 @@ func getDefaultConfig() Config {
 			SettingsReviewed:        false,
 			EnableAlarm:             false,
 			EnableLinkOpening:       true,
+			LinksToOpenCount:        5,
 			UseAttendanceJounralApi: false,
 			UseCustomBrowserCommand: false,
 			BrowserOpenCommand:      "firefox %s",
@@ -86,12 +88,17 @@ func getDefaultConfig() Config {
 		},
 		Screenshot: ScreenshotConfig{
 			ScreenIndex: 0,
-			Interval:    5,
+			Interval:    2,
 			Directory:   getTempDirectoryPath(),
 			BufferCount: 5,
 		},
+		Communication: CommunicationConfig{
+			QrUrl:                "",
+			QrQueryToken:         "",
+			ApiSelfApproveMethod: "",
+		},
 		Logging: LoggingConfig{
-			Level:  "info",
+			Level:  "debug",
 			Output: "stdout",
 		},
 		Telemetry: TelemetryConfig{
@@ -133,6 +140,7 @@ func initializeViper(appName string) (*viper.Viper, string, error) {
 	v.SetDefault("app.settings_reviewed", defaults.App.SettingsReviewed)
 	v.SetDefault("app.enable_alarm", defaults.App.EnableAlarm)
 	v.SetDefault("app.enable_link_opening", defaults.App.EnableLinkOpening)
+	v.SetDefault("app.links_to_open_count", defaults.App.LinksToOpenCount)
 	v.SetDefault("app.use_attendance_journal_api", defaults.App.UseAttendanceJounralApi)
 	v.SetDefault("app.use_custom_browser_command", defaults.App.UseCustomBrowserCommand)
 	v.SetDefault("app.browser_open_command", defaults.App.BrowserOpenCommand)
@@ -143,6 +151,11 @@ func initializeViper(appName string) (*viper.Viper, string, error) {
 	v.SetDefault("screenshot.directory", defaults.Screenshot.Directory)
 	v.SetDefault("screenshot.buffer_count", defaults.Screenshot.BufferCount)
 
+	// Set empty string defaults for communication parameters
+	v.SetDefault("communication.self_approve_url", defaults.Communication.QrUrl)
+	v.SetDefault("communication.qr_query_token", defaults.Communication.QrQueryToken)
+	v.SetDefault("communication.api_self_approve_method", defaults.Communication.ApiSelfApproveMethod)
+
 	v.SetDefault("logging.level", defaults.Logging.Level)
 	v.SetDefault("logging.output", defaults.Logging.Output)
 
@@ -161,6 +174,7 @@ func (c *Config) Save() error {
 	v.Set("app.settings_reviewed", c.App.SettingsReviewed)
 	v.Set("app.enable_alarm", c.App.EnableAlarm)
 	v.Set("app.enable_link_opening", c.App.EnableLinkOpening)
+	v.Set("app.links_to_open_count", c.App.LinksToOpenCount)
 	v.Set("app.use_attendance_journal_api", c.App.UseAttendanceJounralApi)
 	v.Set("app.use_custom_browser_command", c.App.UseCustomBrowserCommand)
 	v.Set("app.browser_open_command", c.App.BrowserOpenCommand)
@@ -171,22 +185,17 @@ func (c *Config) Save() error {
 	v.Set("screenshot.directory", c.Screenshot.Directory)
 	v.Set("screenshot.buffer_count", c.Screenshot.BufferCount)
 
+	// Always set communication parameters, even if empty
+	v.Set("communication.self_approve_url", c.Communication.QrUrl)
+	v.Set("communication.qr_query_token", c.Communication.QrQueryToken)
+	v.Set("communication.api_self_approve_method", c.Communication.ApiSelfApproveMethod)
+
 	v.Set("logging.level", c.Logging.Level)
 	v.Set("logging.output", c.Logging.Output)
 
 	v.Set("telemetry.enable_statistics_collection", c.Telemetry.EnableStatisticsCollection)
 	v.Set("telemetry.enable_anonymous_error_reports", c.Telemetry.EnableAnonymousErrorReports)
 
-	if c.Communication.QrUrl != "" {
-		v.Set("communication.self_approve_url", c.Communication.QrUrl)
-	}
-	if c.Communication.QrQueryToken != "" {
-		v.Set("communication.qr_query_token", c.Communication.QrQueryToken)
-	}
-	if c.Communication.ApiSelfApproveMethod != "" {
-		v.Set("communication.api_self_approve_method", c.Communication.ApiSelfApproveMethod)
-	}
-
 	return v.WriteConfig()
 }