diff --git a/server/seedDatabase.js b/server/seedDatabase.js
index ddeace1..d395047 100644
--- a/server/seedDatabase.js
+++ b/server/seedDatabase.js
@@ -1,4 +1,4 @@
-const bcrypt = require('bcrypt');
+const bcrypt = require('bcryptjs');
 const { User, Device, AlertRule } = require('./models');
 
 async function seedDatabase() {
diff --git a/server/services/alertService.js b/server/services/alertService.js
index 0074955..ee39ca2 100644
--- a/server/services/alertService.js
+++ b/server/services/alertService.js
@@ -1,5 +1,5 @@
 const twilio = require('twilio');
-const { AlertRule, AlertLog, User, Device } = require('../models');
+const { AlertRule, AlertLog, User, Device, DroneDetection } = require('../models');
 const { Op } = require('sequelize');
 
 class AlertService {
@@ -97,19 +97,19 @@ class AlertService {
     const authToken = process.env.TWILIO_AUTH_TOKEN;
     const phoneNumber = process.env.TWILIO_PHONE_NUMBER;
 
-    // If any Twilio credential is missing, disable SMS functionality
+    // If any Twilio credential is missing or empty, disable SMS functionality
     if (!accountSid || !authToken || !phoneNumber || 
         accountSid.trim() === '' || authToken.trim() === '' || phoneNumber.trim() === '') {
-      console.log('📱 Twilio credentials not configured - SMS alerts disabled');
+      console.log('📱 Twilio credentials not configured - SMS alerts disabled (Development Mode)');
       console.log('ℹ️  To enable SMS alerts, set TWILIO_ACCOUNT_SID, TWILIO_AUTH_TOKEN, and TWILIO_PHONE_NUMBER');
       this.twilioEnabled = false;
       this.twilioClient = null;
       return;
     }
 
-    // Validate Twilio Account SID format
-    if (!accountSid.startsWith('AC')) {
-      console.log('⚠️  Invalid Twilio Account SID format - SMS alerts disabled');
+    // Validate Twilio Account SID format (only if provided)
+    if (accountSid && !accountSid.startsWith('AC')) {
+      console.log('⚠️  Invalid Twilio Account SID format - SMS alerts disabled (Development Mode)');
       console.log('ℹ️  Account SID must start with "AC"');
       this.twilioEnabled = false;
       this.twilioClient = null;