diff --git a/app/src/components/AuthForm.vue b/app/src/components/AuthForm.vue
index 36a7eba..563f744 100644
--- a/app/src/components/AuthForm.vue
+++ b/app/src/components/AuthForm.vue
@@ -113,7 +113,7 @@ const registerGuest = async () => {
         :icon="['fas', 'circle-exclamation']"
         class="px-1 text-sm"
       />
-      <span>建議使用電腦全螢幕執行</span>
+      <span>{{ t('authform.recommand_pc_fullscreen') }}</span>
     </div>
     <form @submit.prevent="handleSubmit()" class="w-full">
       <div v-if="socialLogin && hasSocialLogins">
diff --git a/app/src/components/QuestIntro.vue b/app/src/components/QuestIntro.vue
index c76923c..be3e597 100644
--- a/app/src/components/QuestIntro.vue
+++ b/app/src/components/QuestIntro.vue
@@ -59,7 +59,7 @@ onMounted(async () => {
     })
     questInstruction.value = quest.instruction
   } catch (error) {
-    toast.error('Failed to load quest detail:', error)
+    toast.error(t('quest.load_quest_instruction_failed'), error)
   }
   handleColour()
 })
diff --git a/app/src/components/QuestMap.vue b/app/src/components/QuestMap.vue
index 93d203d..935a107 100644
--- a/app/src/components/QuestMap.vue
+++ b/app/src/components/QuestMap.vue
@@ -99,8 +99,8 @@ async function computeGraphData() {
 
     graphData.value = { nodes, edges }
   } catch (error) {
-    console.error('Error computing graph data:', error)
-    toast.error('Failed to load quest data')
+    console.error(t('quest_map.compute_graph_failed'), error)
+    toast.error(t('quest_map.load_quest_data_failed'))
   }
 }
 function handleNodeClick(node: Node) {
diff --git a/app/src/i18n/locales/en.json b/app/src/i18n/locales/en.json
index 715ff82..aca160e 100644
--- a/app/src/i18n/locales/en.json
+++ b/app/src/i18n/locales/en.json
@@ -52,7 +52,8 @@
     "already_registered": "Already have an account?",
     "not_registered": "Don't have an account?",
     "continue_as_guest": "Continue as Guest",
-    "password_rules": "At least 8 characters, including uppercase and lowercase letters and numbers"
+    "password_rules": "At least 8 characters, including uppercase and lowercase letters and numbers",
+    "recommand_pc_fullscreen": "Recommended to use desktop version in full-screen mode"
   },
   "authform_error": {
     "too_many_requests": "Too many requests, please try again in 2 minutes",
@@ -76,11 +77,14 @@
   "quest_map": {
     "title": "Quest Map",
     "intro": "Embark on your Linux adventure!",
-    "load_quest_map_failed": "Failed to Load Quest Map"
+    "load_quest_map_failed": "Failed to Load Quest Map",
+    "compute_graph_failed": "Error computing graph data: ",
+    "load_quest_data_failed": "Failed to Load Quest Data"
   },
   "quest": {
     "start": "Start Adventure",
-    "locked": "Quest not unlocked"
+    "locked": "Quest not unlocked",
+    "load_quest_instruction_failed": "Failed to Load Quest Instruction: "
   },
   "leaderboard": {
     "title": "Leaderboard",
diff --git a/app/src/i18n/locales/zh-TW.json b/app/src/i18n/locales/zh-TW.json
index 8fa9dbf..027dab7 100644
--- a/app/src/i18n/locales/zh-TW.json
+++ b/app/src/i18n/locales/zh-TW.json
@@ -52,7 +52,8 @@
     "already_registered": "已經有帳號了嗎？",
     "not_registered": "還沒有帳號嗎？",
     "continue_as_guest": "以訪客身分繼續",
-    "password_rules": "至少 8 個字元，包含數字及大小寫字母"
+    "password_rules": "至少 8 個字元，包含數字及大小寫字母",
+    "recommand_pc_fullscreen": "建議使用電腦版全螢幕操作"
   },
   "authform_error": {
     "too_many_requests": "太多請求，兩分鐘後再試一次",
@@ -76,11 +77,14 @@
   "quest_map": {
     "title": "關卡地圖",
     "intro": "踏上你的Linux冒險之旅吧！",
-    "load_quest_map_failed": "無法讀取關卡地圖"
+    "load_quest_map_failed": "無法讀取關卡地圖",
+    "compute_graph_failed": "計算關卡地圖時出錯：",
+    "load_quest_data_failed": "無法讀取關卡"
   },
   "quest": {
     "start": "開始冒險",
-    "locked": "關卡尚未解鎖"
+    "locked": "關卡尚未解鎖",
+    "load_quest_instruction_failed": "無法讀取關卡說明："
   },
   "leaderboard": {
     "title": "排行榜",
diff --git a/app/src/views/RegisterPage.vue b/app/src/views/RegisterPage.vue
index db5ae9f..fbe28ef 100644
--- a/app/src/views/RegisterPage.vue
+++ b/app/src/views/RegisterPage.vue
@@ -85,7 +85,7 @@ async function check({
       return
     }
     console.error(err)
-    error(t('authform_error.registration_failed'))
+    error(t('authform_error.auth_failed'))
   }
 }
 </script>