diff --git a/packages/_shared/ohos/src/main/ets/components/plugin/FluwxPlugin.ets b/packages/_shared/ohos/src/main/ets/components/plugin/FluwxPlugin.ets
index a7996ad7..74bddda1 100644
--- a/packages/_shared/ohos/src/main/ets/components/plugin/FluwxPlugin.ets
+++ b/packages/_shared/ohos/src/main/ets/components/plugin/FluwxPlugin.ets
@@ -74,7 +74,7 @@ export default class FluwxPlugin implements FlutterPlugin, MethodCallHandler, Ab
         WXAPiHandler.checkWeChatInstallation(result);
         break;
       case "registerApp":
-        WXAPiHandler.registerApp(call, result);
+        WXAPiHandler.registerApp(call, result, this);
         break;
       case "sendAuth":
         this.authHandler?.sendAuth(call, result);
@@ -262,6 +262,7 @@ export default class FluwxPlugin implements FlutterPlugin, MethodCallHandler, Ab
 
   attemptToResumeMsgFromWx(result: MethodResult) {
     WXAPiHandler.wxApi?.handleWant(this.binding?.getAbility().launchWant, this)
+    result.success(null)
   }
 
   async launchMiniProgram(call: MethodCall, result: MethodResult) {
diff --git a/packages/_shared/ohos/src/main/ets/components/plugin/handlers/WXAPiHandler.ets b/packages/_shared/ohos/src/main/ets/components/plugin/handlers/WXAPiHandler.ets
index ce351205..f24fb771 100644
--- a/packages/_shared/ohos/src/main/ets/components/plugin/handlers/WXAPiHandler.ets
+++ b/packages/_shared/ohos/src/main/ets/components/plugin/handlers/WXAPiHandler.ets
@@ -1,6 +1,6 @@
 import * as wechatOpenSDK from "@tencent/wechat_open_sdk"
 import { MethodCall, MethodResult } from '@ohos/flutter_ohos'
-import { bundleManager, common } from '@kit.AbilityKit'
+import { bundleManager, common, Want } from '@kit.AbilityKit'
 
 export class WXAPiHandler {
   static wxApi: wechatOpenSDK.WXApi | null = null
@@ -20,22 +20,33 @@ export class WXAPiHandler {
     WXAPiHandler.context = context
   }
 
-  static registerApp(call: MethodCall, result: MethodResult) {
-    if (WXAPiHandler.wxApi != null) {
-      result.success(true)
-      return
+  static registerApp(call: MethodCall, result: MethodResult, eventHandler: wechatOpenSDK.WXApiEventHandler) {
+    if (WXAPiHandler.wxApi == null) {
+      const appId: string | null = call.argument("appId")
+      if (!appId) {
+        result.error("invalid app id", "are you sure your app id is correct ?", appId)
+        return
+      }
+      WXAPiHandler.registerWxAPIInternal(appId)
     }
-    const appId: string | null = call.argument("appId")
-    if (!appId) {
-      result.error("invalid app id", "are you sure your app id is correct ?", appId)
-      return
-    }
-
-    WXAPiHandler.registerWxAPIInternal(appId)
 
+    WXAPiHandler.bindEventHandler(eventHandler)
     result.success(WXAPiHandler.registered)
   }
 
+  // The SDK dispatches every response to the handler it received in the most recent handleWant() call,
+  // and handleWant() is the only way to hand it one. Responses coming back through the openLink channel
+  // (current WeChat versions) never go through onNewWant, so until something calls handleWant() the
+  // handler is null and the SDK drops them silently (`this.eventHandler?.onResp(...)`). That is what
+  // made the first auth / pay after every cold start time out (#773).
+  //
+  // An empty Want carries no WeChat payload, so this only binds the handler: nothing is dispatched and the
+  // launch Want is left for attemptToResumeMsgFromWx(), which apps call once their subscribers are ready.
+  private static bindEventHandler(eventHandler: wechatOpenSDK.WXApiEventHandler) {
+    const noPayload: Want = {}
+    WXAPiHandler.wxApi?.handleWant(noPayload, eventHandler)
+  }
+
   static checkWeChatInstallation(result: MethodResult) {
     const isInstalled = bundleManager.canOpenLink("weixin://") || WXAPiHandler.wxApi?.isWXAppInstalled() === true;
     result.success(isInstalled);