:recycle: try different Brevo usage

backend/lib/services/user.js

 const SecurePassword = require('secure-password')
 
 // Configuration for Brevo
-const Brevo = require('@getbrevo/brevo')
-const apiInstance = new Brevo.TransactionalEmailsApi()
-const apiKey = apiInstance.apiClient.authentications['api-key']
-apiKey.apiKey = process.env.BREVO_KEY
-const sendSmtpEmail = new Brevo.SendSmtpEmail()
+const SibApiV3Sdk = require('@getbrevo/brevo')
+let apiInstance = new SibApiV3Sdk.AccountApi()
+apiInstance.setApiKey(
+    SibApiV3Sdk.AccountApiApiKeys.apiKey,
+    process.env.BREVO_KEY,
+)
+const sendSmtpEmail = new SibApiV3Sdk.SendSmtpEmail()
 
 // TODO: Consider implementing, nice use of SecurePassword,
 // but currently not used anywhere...
             emailWasRespondedTo: false,
             accessToken: null,
         }
-        // NOTE: Although this looks messy, Brevo requries these
+        // NOTE: Although this looks messy, Brevo requires these
         // parameters be defined individually like this, attempts
-        // to configure this in a singel object cause errors on their API
+        // to configure this in a single object cause errors on their API
         sendSmtpEmail.sender = {
-            name: 'My Test Company',
+            name: '[siimee]',
             email: 'mytestemail@email.com',
         }
-        sendSmtpEmail.subject = 'My Test Company'
+        sendSmtpEmail.subject = '[siimee] New Email from Siimee!'
         sendSmtpEmail.to = [
             {
                 email: userCredentials.email,