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diff --git a/packages/auditor-backoffice-ui/src/ApplicationReadyRoutes.tsx b/packages/auditor-backoffice-ui/src/ApplicationReadyRoutes.tsx
new file mode 100644
index 000000000..414eee39d
--- /dev/null
+++ b/packages/auditor-backoffice-ui/src/ApplicationReadyRoutes.tsx
@@ -0,0 +1,175 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021-2024 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+/**
+ *
+ * @author Sebastian Javier Marchano (sebasjm)
+ */
+import { HttpStatusCode } from "@gnu-taler/taler-util";
+import { ErrorType, useTranslationContext } from "@gnu-taler/web-util/browser";
+import { createHashHistory } from "history";
+import { Fragment, VNode, h } from "preact";
+import { Route, Router, route } from "preact-router";
+import { useState } from "preact/hooks";
+import { InstanceRoutes } from "./InstanceRoutes.js";
+import {
+  NotConnectedAppMenu,
+  NotYetReadyAppMenu,
+  NotificationCard,
+} from "./components/menu/index.js";
+import { useBackendContext } from "./context/backend.js";
+import { LoginToken } from "./declaration.js";
+import { useBackendInstancesTestForAdmin } from "./hooks/backend.js";
+import { LoginPage } from "./paths/login/index.js";
+import { Settings } from "./paths/settings/index.js";
+import { INSTANCE_ID_LOOKUP } from "./utils/constants.js";
+
+/**
+ * Check if admin against /management/instances
+ * @returns 
+ */
+export function ApplicationReadyRoutes(): VNode {
+  const { i18n } = useTranslationContext();
+  const [unauthorized, setUnauthorized] = useState(false)
+  const {
+    url: backendURL,
+    updateToken,
+    alreadyTriedLogin,
+  } = useBackendContext();
+
+  function updateLoginStatus(token: LoginToken | undefined) {
+    updateToken(token)
+    setUnauthorized(false)
+  }
+
+  const result = useBackendInstancesTestForAdmin();
+
+  const clearTokenAndGoToRoot = () => {
+    route("/");
+  };
+  const [showSettings, setShowSettings] = useState(false)
+  const unauthorizedAdmin = !result.loading
+    && !result.ok
+    && result.type === ErrorType.CLIENT
+    && result.status === HttpStatusCode.Unauthorized;
+
+  if (!alreadyTriedLogin && !result.ok) {
+    return (
+      <Fragment>
+        <NotConnectedAppMenu title="Welcome!" />
+        <LoginPage onConfirm={updateToken} />
+      </Fragment>
+    );
+  }
+
+  if (showSettings) {
+    return <Fragment>
+      <NotYetReadyAppMenu onShowSettings={() => setShowSettings(true)} title="UI Settings" onLogout={clearTokenAndGoToRoot} isPasswordOk={false} />
+      <Settings onClose={() => setShowSettings(false)} />
+    </Fragment>
+  }
+
+  if (result.loading) {
+    return <NotYetReadyAppMenu onShowSettings={() => setShowSettings(true)} title="Loading..." isPasswordOk={false} />;
+  }
+
+  let admin = result.ok || unauthorizedAdmin;
+  let instanceNameByBackendURL: string | undefined;
+
+  if (!admin) {
+    // * the testing against admin endpoint failed and it's not 
+    // an authorization problem
+    // * merchant backend will return this SPA under the main
+    // endpoint or /instance/<id> endpoint
+    // => trying to infer the instance id
+    const path = new URL(backendURL).pathname;
+    const match = INSTANCE_ID_LOOKUP.exec(path);
+    if (!match || !match[1]) {
+      // this should be rare because
+      // query to /config is ok but the URL
+      // does not match our pattern
+      return (
+        <Fragment>
+          <NotYetReadyAppMenu onShowSettings={() => setShowSettings(true)} title="Error" onLogout={clearTokenAndGoToRoot} isPasswordOk={false} />
+          <NotificationCard
+            notification={{
+              message: i18n.str`Couldn't access the server.`,
+              description: i18n.str`Could not infer instance id from url ${backendURL}`,
+              type: "ERROR",
+            }}
+          />
+          {/* <ConnectionPage onConfirm={changeBackend} /> */}
+        </Fragment>
+      );
+    }
+
+    instanceNameByBackendURL = match[1];
+  }
+
+  if (unauthorized || unauthorizedAdmin) {
+    return <Fragment>
+      <NotYetReadyAppMenu onShowSettings={() => setShowSettings(true)} title="Login" onLogout={clearTokenAndGoToRoot} isPasswordOk={false} />
+      <NotificationCard
+        notification={{
+          message: i18n.str`Access denied`,
+          description: i18n.str`Check your token is valid`,
+          type: "ERROR",
+        }}
+      />
+      <LoginPage onConfirm={updateLoginStatus} />
+    </Fragment>
+  }
+
+  const history = createHashHistory();
+  return (
+    <Router history={history}>
+      <Route
+        default
+        component={DefaultMainRoute}
+        admin={admin}
+        onUnauthorized={() => setUnauthorized(true)}
+        onLoginPass={() => {
+          setUnauthorized(false)
+        }}
+        instanceNameByBackendURL={instanceNameByBackendURL}
+      />
+    </Router>
+  );
+}
+
+function DefaultMainRoute({
+  instance,
+  admin,
+  onUnauthorized,
+  onLoginPass,
+  instanceNameByBackendURL,
+  url, //from preact-router
+}: any): VNode {
+  const [instanceName, setInstanceName] = useState(
+    instanceNameByBackendURL || instance || "default",
+  );
+
+  return (
+    <InstanceRoutes
+      admin={admin}
+      path={url}
+      onUnauthorized={onUnauthorized}
+      onLoginPass={onLoginPass}
+      id={instanceName}
+      setInstanceName={setInstanceName}
+    />
+  );
+}