Add warning

app.js

@@ -3,6 +3,8 @@
   'use_strict';
 
   return {
+    SETUP_INFO: 'https://support.zendesk.com/',
+
     storage: {},
 
     requests: {
@@ -247,7 +249,7 @@
           });
 
           if (!valid) {
-
+            this.$('.app-container').prepend(this.renderTemplate('setup_info', { link: this.SETUP_INFO }));
           }
         }
       }

translations/en.json

@@ -185,6 +185,16 @@
     }
   },
   "errors": {
+    "setup": {
+      "question": {
+        "value": "Did you follow the installation instructions for this app and configure both required ticket fields to appear on every ticket form?",
+        "title": "A question that gives the user a hint about what could be wrong"
+      },
+      "solution": {
+        "value": "If not, please see <a href=\"{{url}}\">these instructions</a> and go to your ticket forms management page to finalize the set-up.",
+        "title": "A suggestion about how to setup the app correctly"
+      }
+    },
     "save_hook": {
       "value": "You need to submit your time on this ticket.",
       "title": "Error message when the agent forgot to submit the time on this ticket"