diff --git a/fastlane/metadata/en-US/release_notes.txt b/fastlane/metadata/en-US/release_notes.txt
index eae9e30e..699973d8 100644
--- a/fastlane/metadata/en-US/release_notes.txt
+++ b/fastlane/metadata/en-US/release_notes.txt
@@ -2,3 +2,4 @@ Enjoy toooting! This version includes following improvements and fixes:
 - Align filter experience with v4.0 and above
 - Supports enlarging user's avatar and banner
 - Fix iPad weird sizing (not optimisation)
+- Experiment (!) support of Pleroma
diff --git a/fastlane/metadata/zh-Hans/release_notes.txt b/fastlane/metadata/zh-Hans/release_notes.txt
index 1655a23d..ee10414f 100644
--- a/fastlane/metadata/zh-Hans/release_notes.txt
+++ b/fastlane/metadata/zh-Hans/release_notes.txt
@@ -2,3 +2,4 @@ toooting愉快！此版本包括以下改进和修复：
 - 改进过滤体验，与v4.0以上版本一致
 - 支持查看用户的头像和横幅图片
 - 修复iPad部分尺寸问题（非优化）
+- 试验性（！）支持Pleroma
diff --git a/src/components/Hashtag.tsx b/src/components/Hashtag.tsx
index e03d2fd0..90ab7ef7 100644
--- a/src/components/Hashtag.tsx
+++ b/src/components/Hashtag.tsx
@@ -61,7 +61,7 @@ const ComponentHashtag: React.FC<PropsWithChildren & Props> = ({
         }) => setHeight(height)}
       >
         <Sparkline
-          data={hashtag.history.map(h => parseInt(h.uses)).reverse()}
+          data={hashtag.history?.map(h => parseInt(h.uses)).reverse()}
           width={width}
           height={height}
           margin={children ? StyleConstants.Spacing.S : undefined}
diff --git a/src/helpers/queryClient.ts b/src/helpers/queryClient.ts
index 90649981..cba87dbe 100644
--- a/src/helpers/queryClient.ts
+++ b/src/helpers/queryClient.ts
@@ -1,5 +1,21 @@
 import { QueryClient } from '@tanstack/react-query'
 
-const queryClient = new QueryClient({ defaultOptions: { queries: { staleTime: 1000 * 60 * 5 } } })
+const queryClient = new QueryClient({
+  defaultOptions: {
+    queries: {
+      staleTime: 1000 * 60 * 5,
+      retry: (failureCount, error: any) => {
+        if (error?.status === 404) {
+          return false
+        }
+        if (failureCount <= 3) {
+          return true
+        } else {
+          return false
+        }
+      }
+    }
+  }
+})
 
 export default queryClient
diff --git a/src/utils/slices/instances/add.ts b/src/utils/slices/instances/add.ts
index 989b596b..e69e6c1e 100644
--- a/src/utils/slices/instances/add.ts
+++ b/src/utils/slices/instances/add.ts
@@ -50,6 +50,12 @@ const addInstance = createAsyncThunk(
       domain,
       url: `api/v1/preferences`,
       headers: { Authorization: `Bearer ${token}` }
+    }).catch(error => {
+      if (error?.status === 404) {
+        return Promise.resolve({ body: {} })
+      } else {
+        return Promise.reject()
+      }
     })
 
     const { body: filters } = await apiGeneral<Mastodon.Filter<any>[]>({
diff --git a/src/utils/slices/instances/updateAccountPreferences.ts b/src/utils/slices/instances/updateAccountPreferences.ts
index cf1b65d6..6b57fa65 100644
--- a/src/utils/slices/instances/updateAccountPreferences.ts
+++ b/src/utils/slices/instances/updateAccountPreferences.ts
@@ -7,6 +7,14 @@ export const updateAccountPreferences = createAsyncThunk(
     return apiInstance<Mastodon.Preferences>({
       method: 'get',
       url: `preferences`
-    }).then(res => res.body)
+    })
+      .then(res => res.body)
+      .catch(error => {
+        if (error?.status === 404) {
+          return Promise.resolve({})
+        } else {
+          return Promise.reject()
+        }
+      })
   }
 )
diff --git a/src/utils/slices/instancesSlice.ts b/src/utils/slices/instancesSlice.ts
index 7704cef9..4771b10e 100644
--- a/src/utils/slices/instancesSlice.ts
+++ b/src/utils/slices/instancesSlice.ts
@@ -280,7 +280,7 @@ export const getInstanceUrl = ({ instances: { instances } }: RootState) =>
   instances[findInstanceActive(instances)]?.url
 
 export const getInstanceUri = ({ instances: { instances } }: RootState) =>
-  instances[findInstanceActive(instances)]?.uri
+  instances[findInstanceActive(instances)]?.uri.replace(/^https?:\/\//, '') // Pleroma has schema
 
 export const getInstanceUrls = ({ instances: { instances } }: RootState) =>
   instances[findInstanceActive(instances)]?.urls