diff --git a/proposals/proposal-271.sh b/proposals/proposal-274.sh
similarity index 71%
rename from proposals/proposal-271.sh
rename to proposals/proposal-274.sh
index 81d3577..c6966b8 100755
--- a/proposals/proposal-271.sh
+++ b/proposals/proposal-274.sh
@@ -6,13 +6,13 @@ source "$(pwd)"/proposals/env.sh
 # build and get batch_id, evidence:
 # dfx deploy ic_message_frontend --ic --by-proposal
 
-export BLOB="$(didc encode --format blob '(record {batch_id=44:nat; evidence=blob "\bf\ef\6d\20\99\de\7e\7c\ea\a5\0e\08\96\67\d0\a0\40\ff\44\c3\c3\5b\fa\ef\85\2f\72\ac\26\76\bf\2b"})')"
+export BLOB="$(didc encode --format blob '(record {batch_id=46:nat; evidence=blob "\79\f7\db\d0\09\00\1e\e1\d5\39\b2\60\fb\80\40\bc\3b\34\16\37\9b\9c\02\6b\aa\09\97\19\f4\f0\c2\6b"})')"
 
 quill sns make-proposal --canister-ids-file ./sns_canister_ids.json --pem-file $PROPOSAL_PEM_FILE $PROPOSAL_NEURON_ID --proposal "(
     record {
-        title = \"Execute commit_proposed_batch() to release ic_message_frontend v2.9.2\";
+        title = \"Execute commit_proposed_batch() to release ic_message_frontend v2.9.4\";
         url = \"https://dMsg.net/\";
-        summary = \"This proposal executes commit_proposed_batch() on 2fvu6-tqaaa-aaaap-akksa-cai to release ic_message_frontend v2.9.2.\n\n1. fix: try to fix sign in issue on mobile.\";
+        summary = \"This proposal executes commit_proposed_batch() on 2fvu6-tqaaa-aaaap-akksa-cai to release ic_message_frontend v2.9.4.\n\n1. fix: try to fix sign in issue on mobile.\";
         action = opt variant {
             ExecuteGenericNervousSystemFunction = record {
                 function_id = 1100 : nat64;
@@ -22,4 +22,4 @@ quill sns make-proposal --canister-ids-file ./sns_canister_ids.json --pem-file $
     }
 )" > proposal-message.json
 
-quill send proposal-message.json
+# quill send proposal-message.json
diff --git a/src/ic_message_frontend/package.json b/src/ic_message_frontend/package.json
index 1cf599b..a1a8e71 100644
--- a/src/ic_message_frontend/package.json
+++ b/src/ic_message_frontend/package.json
@@ -84,5 +84,5 @@
     "test": "vitest run"
   },
   "type": "module",
-  "version": "2.9.2"
+  "version": "2.9.4"
 }
\ No newline at end of file
diff --git a/src/ic_message_frontend/src/lib/constants.ts b/src/ic_message_frontend/src/lib/constants.ts
index db8aee0..8095d73 100644
--- a/src/ic_message_frontend/src/lib/constants.ts
+++ b/src/ic_message_frontend/src/lib/constants.ts
@@ -1,6 +1,6 @@
 const src = globalThis.location?.href || ''
 
-export const APP_VERSION = '2.9.2'
+export const APP_VERSION = '2.9.4'
 export const IS_LOCAL = src.includes('localhost') || src.includes('127.0.0.1')
 export const ENV = IS_LOCAL ? 'local' : 'ic'
 export const APP_ORIGIN = IS_LOCAL
diff --git a/src/ic_message_frontend/src/lib/stores/auth.ts b/src/ic_message_frontend/src/lib/stores/auth.ts
index 3e38e12..8a50dcb 100644
--- a/src/ic_message_frontend/src/lib/stores/auth.ts
+++ b/src/ic_message_frontend/src/lib/stores/auth.ts
@@ -13,6 +13,7 @@ import {
   setNameIdentity
 } from '$lib/utils/auth'
 import { encodeCBOR, toArrayBuffer } from '$lib/utils/crypto'
+import { popupCenter } from '$lib/utils/window'
 import type { DerEncodedPublicKey, Identity, Signature } from '@dfinity/agent'
 import {
   Delegation,
@@ -54,6 +55,7 @@ export interface AuthStore extends Readable<AuthStoreData> {
 }
 
 function initAuthStore(): AuthStore {
+  const authClientPromise = createAuthClient()
   let identity: IdentityEx | null = null
   let srcIdentity: IdentityEx | null = null
   // srcAgent is used to sign in with username
@@ -151,10 +153,12 @@ function initAuthStore(): AuthStore {
       window.location.assign('/_/messages')
     },
 
-    signIn: async () => {
-      const authClient = await createAuthClient()
-      return new Promise<void>((resolve, reject) => {
-        authClient.login({
+    signIn: () =>
+      new Promise<void>(async (resolve, reject) => {
+        // Important: authClientPromise should be resolved here
+        // https://ffan0811.medium.com/window-open-returns-null-in-safari-and-firefox-after-allowing-pop-up-on-the-browser-4e4e45e7d926
+        const authClient = await authClientPromise
+        await authClient.login({
           derivationOrigin: DERIVATION_ORIGIN as string,
           maxTimeToLive: BigInt(EXPIRATION_MS) * 1000000n,
           onSuccess: () => {
@@ -176,10 +180,13 @@ function initAuthStore(): AuthStore {
             console.error(err)
             reject(err)
           },
-          identityProvider: IDENTITY_PROVIDER
+          identityProvider: IDENTITY_PROVIDER,
+          windowOpenerFeatures: popupCenter({
+            width: 576,
+            height: 625
+          })
         })
-      })
-    },
+      }),
 
     logout: async (url: string) => {
       dynAgent.setIdentity(anonymousIdentity)