diff --git a/src/index.js b/src/index.js
index d8778fa..cdd4476 100644
--- a/src/index.js
+++ b/src/index.js
@@ -7,8 +7,8 @@ const lang = require('./lang')
 
 const TRANSLATE_API_ROOT = 'https://{s}bing.com'
 const TRANSLATE_WEBSITE = TRANSLATE_API_ROOT + '/translator'
-const TRANSLATE_API = TRANSLATE_API_ROOT + '/ttranslatev3'
-const TRANSLATE_SPELL_CHECK_API = TRANSLATE_API_ROOT + '/tspellcheckv3'
+const TRANSLATE_API = TRANSLATE_API_ROOT + '/ttranslatev3?isVertical=1'
+const TRANSLATE_SPELL_CHECK_API = TRANSLATE_API_ROOT + '/tspellcheckv3?isVertical=1'
 
 const USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.5195.127 Safari/537.36'
 
@@ -48,9 +48,6 @@ async function fetchGlobalConfig(userAgent, proxyAgents) {
   let token
   let key
   let tokenExpiryInterval
-  let isVertical
-  let frontDoorBotClassification
-  let isSignedInOrCorporateUser
   let cookie
   try {
     const { body, headers, request: { redirects } } = await got(replaceSubdomain(TRANSLATE_WEBSITE, subdomain), {
@@ -69,8 +66,8 @@ async function fetchGlobalConfig(userAgent, proxyAgents) {
     IID = body.match(/data-iid="([^"]+)"/)[1]
 
     // required
-    ;[key, token, tokenExpiryInterval, isVertical, frontDoorBotClassification, isSignedInOrCorporateUser] = JSON.parse(
-      body.match(/params_RichTranslateHelper\s?=\s?([^\]]+\])/)[1]
+    ;[key, token, tokenExpiryInterval] = JSON.parse(
+      body.match(/params_AbusePreventionHelper\s?=\s?([^\]]+\])/)[1]
     )
   } catch (e) {
     console.error('failed to fetch global config', e)
@@ -84,9 +81,6 @@ async function fetchGlobalConfig(userAgent, proxyAgents) {
     token,
     tokenTs: key,
     tokenExpiryInterval,
-    isVertical,
-    frontDoorBotClassification,
-    isSignedInOrCorporateUser,
     cookie,
     // PENDING: reset count if count value is large?
     count: 0
@@ -94,11 +88,10 @@ async function fetchGlobalConfig(userAgent, proxyAgents) {
 }
 
 function makeRequestURL(isSpellCheck) {
-  const { IG, IID, subdomain, isVertical } = globalConfig
+  const { IG, IID, subdomain } = globalConfig
   return replaceSubdomain(isSpellCheck ? TRANSLATE_SPELL_CHECK_API : TRANSLATE_API, subdomain)
-    + '?isVertical=' + +isVertical
     + (IG && IG.length ? '&IG=' + IG : '')
-    + (IID && IID.length ? '&IID=' + IID + '.' + (globalConfig.count++) : '')
+    + (IID && IID.length ? '&IID=' + IID + '.' + (++globalConfig.count) : '')
 }
 
 function makeRequestBody(isSpellCheck, text, fromLang, toLang) {
diff --git a/test/index.js b/test/index.js
index d578d83..ec04bb8 100644
--- a/test/index.js
+++ b/test/index.js
@@ -46,7 +46,7 @@ translate('gradent', null, 'en', true)
 .catch(onErr)
 
 // correct short text to `this text is very long`
-translate('this text is very lang', null, 'en', true)
+translate('this text is vry lang', null, 'en', true)
 .then(printCorrectRes)
 .catch(onErr)
 
@@ -61,12 +61,6 @@ translate('this text is very long this text is very long this text is very long
 .catch(onErr)
 
 // max text len -> return `undefined` for exceeding max length
-translate((() => {
-  let text = ''
-  while (text.length < 1001) {
-    text += ~~(Math.random() * 10) + ''
-  }
-  return text
-})(), null, 'en')
+translate(new Array(1001).fill('0').join(''), null, 'en')
 .then(printRes)
 .catch(e => onErr(e, true))