diff --git a/src/pkjs/index.js b/src/pkjs/index.js
index 69b5c38..9621569 100644
--- a/src/pkjs/index.js
+++ b/src/pkjs/index.js
@@ -11,8 +11,12 @@ Pebble.addEventListener("appmessage", function (dict) {
     if (dict.payload["PKJS_SLEEP_TIMESTAMP"]) {
         const sleepTimestamp = dict.payload["PKJS_SLEEP_TIMESTAMP"];
         const cfg = JSON.parse(localStorage.getItem('clay-settings'));
-        // TODO report last episode as "Configure app settings!" if CLAY_API_HOST, CLAY_API_KEY, or CLAY_USER is empty
-        // TODO use API to dynamically determine user (prompt on watch)
+
+        // report to user if some configuration is missing
+        if (cfg.CLAY_API_HOST == "" || cfg.CLAY_API_KEY == "" || cfg.CLAY_USER == "") {
+            Pebble.sendAppMessage({ PKJS_LAST_WATCHED: "SOME APP SETTINGS ARE UNSET" });
+        }
+
         if (cfg.CLAY_API_IS_JELLYFIN == true) {
             callAPI(cfg.CLAY_API_HOST + "/System/ActivityLog/Entries?hasUserId=true&limit=100", cfg.CLAY_API_KEY, true, cfg.CLAY_USER, sleepTimestamp * 1000);
         } else {
@@ -27,9 +31,51 @@ Pebble.addEventListener("appmessage", function (dict) {
 
 function callAPI(fullURL, apiKey, isJellyfin, trackedUser, sleepTimestamp) {
     const xhr = new XMLHttpRequest();
+    
+    let didReportError = false;
+    function reportApiError(message) {
+        if (didReportError) {
+            return;
+        }
+        didReportError = true;
+        Pebble.sendAppMessage({ PKJS_LAST_WATCHED: message });
+    }
+
+    xhr.onerror = function () {
+        reportApiError("API UNREACHABLE");
+    };
+
+    xhr.ontimeout = function () {
+        reportApiError("API TIMEOUT");
+    };
+
     xhr.onreadystatechange = function () {
         if (xhr.readyState === 4) {
-            const resp = JSON.parse(xhr.responseText);
+            if (xhr.status === 0) {
+                reportApiError("API UNREACHABLE");
+                return;
+            }
+            if (xhr.status < 200 || xhr.status >= 300) {
+                if (xhr.status == 401) {
+                    reportApiError("API ERROR: " + xhr.status + " (CHECK API KEY)");
+                } else {
+                    reportApiError("API ERROR: " + xhr.status);
+                }
+                return;
+            }
+            if (!xhr.responseText) {
+                reportApiError("API EMPTY RESPONSE");
+                return;
+            }
+
+            let resp;
+            try {
+                resp = JSON.parse(xhr.responseText);
+            } catch (e) {
+                reportApiError("API INVALID RESPONSE");
+                return;
+            }
+
             if (resp && ((isJellyfin === true && Array.isArray(resp.Items)) || (isJellyfin === false && Array.isArray(resp.response.data.data)))) {
                 let delta;
                 let bestDelta = Infinity;
@@ -66,14 +112,16 @@ function callAPI(fullURL, apiKey, isJellyfin, trackedUser, sleepTimestamp) {
                 }
                 if (lastWatched != "") {
                     //console.log("Last watched: " + lastWatched);
-                    var dict = { 'PKJS_LAST_WATCHED': lastWatched }
-                    Pebble.sendAppMessage(dict);
+                    Pebble.sendAppMessage({ PKJS_LAST_WATCHED: lastWatched });
+                } else { 
+                    Pebble.sendAppMessage({ PKJS_LAST_WATCHED: "NO WATCH HISTORY FOUND FOR USER " + trackedUser });
                 }
             }
         }
     };
 
     xhr.open("GET", fullURL, true);
+    xhr.timeout = 8000;
     xhr.setRequestHeader("Accept", "application/json");
     if (isJellyfin) {
         xhr.setRequestHeader("Authorization", 'MediaBrowser Token="' + apiKey + '"');