diff --git a/config/dev.js b/config/dev.js
index 98d19dce4..c0a6063ed 100644
--- a/config/dev.js
+++ b/config/dev.js
@@ -7,8 +7,8 @@ module.exports = {
   TERMS_URL:
     "https://www.topcoder-dev.com/challenges/terms/detail/317cd8f9-d66c-4f2a-8774-63c612d99cd4",
   PRIVACY_POLICY_URL: "https://www.topcoder-dev.com/policy",
-  SIGN_IN_URL: `https://accounts-auth0.topcoder-dev.com/?retUrl=https%3A%2F%2Fplatform-ui.topcoder-dev.com%2Fself-service%2Fwizard&regSource=selfService`,
-  SIGN_UP_URL: `https://accounts-auth0.topcoder-dev.com/?retUrl=https%3A%2F%2Fplatform-ui.topcoder-dev.com%2Fself-service%2Fwizard&regSource=selfService&mode=signUp`,
+  SIGN_IN_URL: `https://accounts-auth0.topcoder-dev.com/?retUrl=https%3A%2F%2Fwork.topcoder-dev.com%2Fself-service%2Fwizard&regSource=selfService`,
+  SIGN_UP_URL: `https://accounts-auth0.topcoder-dev.com/?retUrl=https%3A%2F%2Fwork.topcoder-dev.com%2Fself-service%2Fwizard&regSource=selfService&mode=signUp`,
   /**
    * URL of Topcoder Connect Website
    */
diff --git a/config/prod.js b/config/prod.js
index 3e81f2045..f49e3aea1 100644
--- a/config/prod.js
+++ b/config/prod.js
@@ -7,8 +7,8 @@ module.exports = {
   TERMS_URL:
     "https://www.topcoder.com/challenges/terms/detail/564a981e-6840-4a5c-894e-d5ad22e9cd6f",
   PRIVACY_POLICY_URL: "https://www.topcoder.com/policy",
-  SIGN_IN_URL: `https://accounts-auth0.topcoder.com/?retUrl=https%3A%2F%2Fplatform-ui.topcoder.com%2Fself-service%2Fwizard&regSource=selfService`,
-  SIGN_UP_URL: `https://accounts-auth0.topcoder.com/?retUrl=https%3A%2F%2Fplatform-ui.topcoder.com%2Fself-service%2Fwizard&regSource=selfService&mode=signUp`,
+  SIGN_IN_URL: `https://accounts-auth0.topcoder.com/?retUrl=https%3A%2F%2Fwork.topcoder.com%2Fself-service%2Fwizard&regSource=selfService`,
+  SIGN_UP_URL: `https://accounts-auth0.topcoder.com/?retUrl=https%3A%2F%2Fwork.topcoder.com%2Fself-service%2Fwizard&regSource=selfService&mode=signUp`,
 
   /**
    * URL of Topcoder Connect Website
diff --git a/src-ts/tools/learn/course-page-wrapper/CoursePage.context.tsx b/src-ts/tools/learn/course-page-wrapper/CoursePage.context.tsx
index c441d8f57..28f24ee12 100644
--- a/src-ts/tools/learn/course-page-wrapper/CoursePage.context.tsx
+++ b/src-ts/tools/learn/course-page-wrapper/CoursePage.context.tsx
@@ -46,7 +46,7 @@ export const CoursePageContextProvider: FC<CoursePageContextProviderProps> = pro
             const breadcrumbs: BreadcrumbItemModel[] = [
                 {
                     name: 'Topcoder Academy',
-                    url: rootRoute,
+                    url: rootRoute || '/',
                 },
                 ...(!parentTcaCert ? [] : [parentTcaCert]),
                 ...items,
diff --git a/src-ts/tools/learn/learn.routes.tsx b/src-ts/tools/learn/learn.routes.tsx
index b75662646..51978b884 100644
--- a/src-ts/tools/learn/learn.routes.tsx
+++ b/src-ts/tools/learn/learn.routes.tsx
@@ -131,7 +131,7 @@ export function getTCACertificateUrl(
 export function getTCACertificationValidationUrl(
     completionUuid: string,
 ): string {
-    return `${EnvironmentConfig.TOPCODER_URLS.TCA}${LEARN_PATHS.root}/${completionUuid}`
+    return `${absoluteRootRoute}/${completionUuid}`
 }
 
 export function getTCAUserCertificationUrl(