Fix alert check

Author: Raicuparta

app/components/AppAlert.tsx

@@ -1,9 +1,7 @@
 import React, { Fragment, useEffect, useState } from 'react';
 import {
-  Typography,
   makeStyles,
   Box,
-  Link,
   Container,
 } from '@material-ui/core';
 import { useRecoilValue } from 'recoil';
@@ -39,7 +37,7 @@ export const AppAlert = () => {
     updateAlert();
   }, [alertSourceUrl]);
 
-  if (!alert) {
+  if (!alert || !alert.enabled) {
     return null;
   }