diff --git a/modules/tappxBidAdapter.js b/modules/tappxBidAdapter.js
index 566795a204b..48e0abc5c7f 100644
--- a/modules/tappxBidAdapter.js
+++ b/modules/tappxBidAdapter.js
@@ -8,7 +8,7 @@ import { config } from '../src/config.js';
 const BIDDER_CODE = 'tappx';
 const TTL = 360;
 const CUR = 'USD';
-const TAPPX_BIDDER_VERSION = '0.1.10514';
+const TAPPX_BIDDER_VERSION = '0.1.10526';
 const TYPE_CNN = 'prebidjs';
 const VIDEO_SUPPORT = ['instream'];
 
@@ -79,7 +79,7 @@ export const spec = {
 
     // GDPR & CCPA
     if (gdprConsent) {
-      url += '&gdpr=' + (gdprConsent.gdprApplies ? 1 : 0);
+      url += '&gdpr_optin=' + (gdprConsent.gdprApplies ? 1 : 0);
       url += '&gdpr_consent=' + encodeURIComponent(gdprConsent.consentString || '');
     }
     if (uspConsent) {
@@ -120,7 +120,7 @@ function validBasic(bid) {
   }
 
   let classicEndpoint = true
-  if ((new RegExp(`^(vz.*|zz.*)\.*$`, 'i')).test(bid.params.host)) {
+  if ((new RegExp(`^(vz.*|zz.*)\\.*$`, 'i')).test(bid.params.host)) {
     classicEndpoint = false
   }
 
@@ -398,8 +398,8 @@ function getHostInfo(validBidRequests) {
 
   domainInfo.domain = hostParam.split('/', 1)[0];
 
-  let regexNewEndpoints = new RegExp(`^(vz.*|zz.*)\.pub\.tappx\.com$`, 'i');
-  let regexClassicEndpoints = new RegExp(`^([a-z]{3}|testing)\.[a-z]{3}\.tappx\.com$`, 'i');
+  let regexNewEndpoints = new RegExp(`^(vz.*|zz.*)\\.[a-z]{3}\\.tappx\\.com$`, 'i');
+  let regexClassicEndpoints = new RegExp(`^([a-z]{3}|testing)\\.[a-z]{3}\\.tappx\\.com$`, 'i');
 
   if (regexNewEndpoints.test(domainInfo.domain)) {
     domainInfo.newEndpoint = true;