diff --git a/modules/onetagBidAdapter.js b/modules/onetagBidAdapter.js
index 6280dd12268..fd66c8ce69f 100644
--- a/modules/onetagBidAdapter.js
+++ b/modules/onetagBidAdapter.js
@@ -4,7 +4,10 @@ import { BANNER, VIDEO } from '../src/mediaTypes.js';
 import { INSTREAM, OUTSTREAM } from '../src/video.js';
 import { Renderer } from '../src/Renderer.js';
 import find from 'core-js-pure/features/array/find.js';
-const { registerBidder } = require('../src/adapters/bidderFactory.js');
+import { getStorageManager } from '../src/storageManager.js';
+import { registerBidder } from '../src/adapters/bidderFactory.js';
+
+const storage = getStorageManager();
 
 const ENDPOINT = 'https://onetag-sys.com/prebid-request';
 const USER_SYNC_ENDPOINT = 'https://onetag-sys.com/usync/';
@@ -62,14 +65,15 @@ function buildRequests(validBidRequests, bidderRequest) {
   if (bidderRequest && bidderRequest.userId) {
     payload.userId = bidderRequest.userId;
   }
-  if (window.localStorage) {
-    payload.onetagSid = window.localStorage.getItem('onetag_sid');
-  }
-  const payloadString = JSON.stringify(payload);
+  try {
+    if (storage.hasLocalStorage()) {
+      payload.onetagSid = storage.getDataFromLocalStorage('onetag_sid');
+    }
+  } catch (e) {}
   return {
     method: 'POST',
     url: ENDPOINT,
-    data: payloadString
+    data: JSON.stringify(payload)
   }
 }
 
@@ -161,17 +165,22 @@ function onetagRenderer({renderer, width, height, vastXml, adUnitCode}) {
 }
 
 function getFrameNesting() {
-  let frame = window;
+  let topmostFrame = window;
+  let parent = window.parent;
+  let currentFrameNesting = 0;
   try {
-    while (frame !== frame.top) {
+    while (topmostFrame !== topmostFrame.parent) {
+      parent = topmostFrame.parent;
       // eslint-disable-next-line no-unused-expressions
-      frame.location.href;
-      frame = frame.parent;
+      parent.location.href;
+      topmostFrame = topmostFrame.parent;
     }
-  } catch (e) {}
+  } catch (e) {
+    currentFrameNesting = parent === topmostFrame.top ? 1 : 2;
+  }
   return {
-    topmostFrame: frame,
-    currentFrameNesting: frame.top === frame ? 1 : 2
+    topmostFrame,
+    currentFrameNesting
   }
 }
 
@@ -198,8 +207,11 @@ function getDocumentVisibility(window) {
 function getPageInfo() {
   const { topmostFrame, currentFrameNesting } = getFrameNesting();
   return {
-    location: encodeURIComponent(topmostFrame.location.href),
-    referrer: encodeURIComponent(topmostFrame.document.referrer) || '0',
+    location: topmostFrame.location.href,
+    referrer:
+      topmostFrame.document.referrer !== ''
+        ? topmostFrame.document.referrer
+        : null,
     masked: currentFrameNesting,
     wWidth: topmostFrame.innerWidth,
     wHeight: topmostFrame.innerHeight,
@@ -216,7 +228,11 @@ function getPageInfo() {
     docHidden: getDocumentVisibility(topmostFrame),
     docHeight: topmostFrame.document.body ? topmostFrame.document.body.scrollHeight : null,
     hLength: history.length,
-    timing: getTiming()
+    timing: getTiming(),
+    version: {
+      prebid: '$prebid.version$',
+      adapter: '1.0.0'
+    }
   };
 }
 
@@ -256,6 +272,7 @@ function setGeneralInfo(bidRequest) {
   this['auctionId'] = bidRequest.auctionId;
   this['transactionId'] = bidRequest.transactionId;
   this['pubId'] = params.pubId;
+  this['ext'] = params.ext;
   if (params.pubClick) {
     this['click'] = params.pubClick;
   }
@@ -326,7 +343,7 @@ function parseSizes(bid) {
 
 function getSizes(sizes) {
   const ret = [];
-  for (let i = 0, lenght = sizes.length; i < lenght; i++) {
+  for (let i = 0; i < sizes.length; i++) {
     const size = sizes[i];
     ret.push({width: size[0], height: size[1]})
   }
diff --git a/test/spec/modules/onetagBidAdapter_spec.js b/test/spec/modules/onetagBidAdapter_spec.js
index a951c74b20b..c1462c3814d 100644
--- a/test/spec/modules/onetagBidAdapter_spec.js
+++ b/test/spec/modules/onetagBidAdapter_spec.js
@@ -132,10 +132,10 @@ describe('onetag', function () {
       const data = JSON.parse(d);
       it('Should contain all keys', function () {
         expect(data).to.be.an('object');
-        expect(data).to.include.all.keys('location', 'referrer', 'masked', 'sHeight', 'sWidth', 'docHeight', 'wHeight', 'wWidth', 'oHeight', 'oWidth', 'aWidth', 'aHeight', 'sLeft', 'sTop', 'hLength', 'bids', 'docHidden', 'xOffset', 'yOffset', 'onetagSid');
+        expect(data).to.include.all.keys('location', 'referrer', 'masked', 'sHeight', 'sWidth', 'docHeight', 'wHeight', 'wWidth', 'oHeight', 'oWidth', 'aWidth', 'aHeight', 'sLeft', 'sTop', 'hLength', 'bids', 'docHidden', 'xOffset', 'yOffset', 'timing', 'version');
         expect(data.location).to.be.a('string');
-        expect(data.masked).to.be.a('number');
-        expect(data.referrer).to.be.a('string');
+        expect(data.masked).to.be.oneOf([0, 1, 2]);
+        expect(data.referrer).to.satisfy(referrer => referrer === null || typeof referrer === 'string');
         expect(data.sHeight).to.be.a('number');
         expect(data.sWidth).to.be.a('number');
         expect(data.wWidth).to.be.a('number');
@@ -148,6 +148,7 @@ describe('onetag', function () {
         expect(data.sTop).to.be.a('number');
         expect(data.hLength).to.be.a('number');
         expect(data.bids).to.be.an('array');
+        expect(data.version).to.have.all.keys('prebid', 'adapter');
         const bids = data['bids'];
         for (let i = 0; i < bids.length; i++) {
           const bid = bids[i];