diff --git a/apps/epic-web/src/lib/users.ts b/apps/epic-web/src/lib/users.ts
index c3c38fcf4..7d752e8e1 100644
--- a/apps/epic-web/src/lib/users.ts
+++ b/apps/epic-web/src/lib/users.ts
@@ -99,7 +99,7 @@ export async function getUserAndSubscriber({
     user = user ? user : await getUserByEmail(subscriber.email_address)
     res.setHeader(
       'Set-Cookie',
-      serialize('ck_subscriber', JSON.stringify(subscriber), {
+      serialize('ck_subscriber', JSON.stringify(deepOmitNull(subscriber)), {
         httpOnly: true,
         secure: process.env.NODE_ENV === 'production',
         path: '/',
@@ -113,3 +113,21 @@ export async function getUserAndSubscriber({
     subscriber: convertToSerializeForNextResponse(subscriber),
   }
 }
+
+function deepOmitNull(obj: any): any {
+  if (Array.isArray(obj)) {
+    return obj.map(deepOmitNull).filter((x) => x !== null)
+  }
+
+  if (obj && typeof obj === 'object') {
+    return Object.entries(obj).reduce((acc, [key, value]) => {
+      const cleaned = deepOmitNull(value)
+      if (cleaned !== null) {
+        acc[key] = cleaned
+      }
+      return acc
+    }, {} as Record<string, any>)
+  }
+
+  return obj === null ? undefined : obj
+}
diff --git a/packages/skill-lesson/trpc/routers/convertkit.ts b/packages/skill-lesson/trpc/routers/convertkit.ts
index 78b0abc40..d32ab5a03 100644
--- a/packages/skill-lesson/trpc/routers/convertkit.ts
+++ b/packages/skill-lesson/trpc/routers/convertkit.ts
@@ -44,7 +44,7 @@ export const convertkitRouter = router({
 
       const convertkitCookie = serialize(
         `ck_subscriber`,
-        JSON.stringify(updatedSubscriber.subscriber),
+        JSON.stringify(deepOmitNull(updatedSubscriber.subscriber)),
         {
           secure: process.env.NODE_ENV === 'production',
           path: '/',
@@ -86,7 +86,7 @@ export const convertkitRouter = router({
 
       const convertkitCookie = serialize(
         `ck_subscriber`,
-        JSON.stringify(updatedSubscriber.subscriber),
+        JSON.stringify(deepOmitNull(updatedSubscriber.subscriber)),
         {
           secure: process.env.NODE_ENV === 'production',
           path: '/',
@@ -167,7 +167,7 @@ export const convertkitRouter = router({
 
       const convertkitCookie = serialize(
         `ck_subscriber`,
-        JSON.stringify(updatedSubscriber.subscriber),
+        JSON.stringify(deepOmitNull(updatedSubscriber.subscriber)),
         {
           secure: process.env.NODE_ENV === 'production',
           path: '/',
@@ -226,7 +226,7 @@ export const convertkitRouter = router({
 
       const convertkitCookie = serialize(
         `ck_subscriber`,
-        JSON.stringify(updatedSubscriber.subscriber),
+        JSON.stringify(deepOmitNull(updatedSubscriber.subscriber)),
         {
           secure: process.env.NODE_ENV === 'production',
           path: '/',
@@ -321,3 +321,21 @@ export const convertkitRouter = router({
       }
     }),
 })
+
+function deepOmitNull(obj: any): any {
+  if (Array.isArray(obj)) {
+    return obj.map(deepOmitNull).filter((x) => x !== null)
+  }
+
+  if (obj && typeof obj === 'object') {
+    return Object.entries(obj).reduce((acc, [key, value]) => {
+      const cleaned = deepOmitNull(value)
+      if (cleaned !== null) {
+        acc[key] = cleaned
+      }
+      return acc
+    }, {} as Record<string, any>)
+  }
+
+  return obj === null ? undefined : obj
+}
diff --git a/packages/skill-lesson/trpc/routers/pricing.ts b/packages/skill-lesson/trpc/routers/pricing.ts
index 04ceab49e..22492643b 100644
--- a/packages/skill-lesson/trpc/routers/pricing.ts
+++ b/packages/skill-lesson/trpc/routers/pricing.ts
@@ -211,7 +211,7 @@ export const pricing = router({
         user = user ? user : await getUserByEmail(subscriber.email_address)
         ctx.res.setHeader(
           'Set-Cookie',
-          serialize('ck_subscriber', JSON.stringify(subscriber), {
+          serialize('ck_subscriber', JSON.stringify(deepOmitNull(subscriber)), {
             httpOnly: true,
             secure: process.env.NODE_ENV === 'production',
             path: '/',
@@ -305,3 +305,21 @@ export const pricing = router({
     return null
   }),
 })
+
+function deepOmitNull(obj: any): any {
+  if (Array.isArray(obj)) {
+    return obj.map(deepOmitNull).filter((x) => x !== null)
+  }
+
+  if (obj && typeof obj === 'object') {
+    return Object.entries(obj).reduce((acc, [key, value]) => {
+      const cleaned = deepOmitNull(value)
+      if (cleaned !== null) {
+        acc[key] = cleaned
+      }
+      return acc
+    }, {} as Record<string, any>)
+  }
+
+  return obj === null ? undefined : obj
+}
diff --git a/packages/skill-lesson/utils/ck-set-subscriber-cookie.ts b/packages/skill-lesson/utils/ck-set-subscriber-cookie.ts
index 6ee6c7bc8..4787c1393 100644
--- a/packages/skill-lesson/utils/ck-set-subscriber-cookie.ts
+++ b/packages/skill-lesson/utils/ck-set-subscriber-cookie.ts
@@ -12,7 +12,7 @@ export function convertkitSetSubscriberCookie({
   if (subscriber) {
     const convertkitCookie = serialize(
       `ck_subscriber`,
-      JSON.stringify(subscriber),
+      JSON.stringify(deepOmitNull(subscriber)),
       {
         secure: process.env.NODE_ENV === 'production',
         path: '/',
@@ -25,3 +25,21 @@ export function convertkitSetSubscriberCookie({
     res.setHeader('Set-Cookie', convertkitCookie)
   }
 }
+
+function deepOmitNull(obj: any): any {
+  if (Array.isArray(obj)) {
+    return obj.map(deepOmitNull).filter((x) => x !== null)
+  }
+
+  if (obj && typeof obj === 'object') {
+    return Object.entries(obj).reduce((acc, [key, value]) => {
+      const cleaned = deepOmitNull(value)
+      if (cleaned !== null) {
+        acc[key] = cleaned
+      }
+      return acc
+    }, {} as Record<string, any>)
+  }
+
+  return obj === null ? undefined : obj
+}