diff --git a/src/app/questions-list/page.tsx b/src/app/questions-list/page.tsx
index c714ede..0bddedc 100644
--- a/src/app/questions-list/page.tsx
+++ b/src/app/questions-list/page.tsx
@@ -283,6 +283,7 @@ export default function QuestionsListPage() {
       const result = await updateMarriageSectionData(pendingSections[0].slug, {
         current_step: pendingSections[0].storedValue.current_step,
         fields: pendingSections.flatMap((section) => section.fields),
+        version: overview.version,
       });
       applyProfilePatchResultToCache(queryClient, locale, result);
       const cleared = new Set(result.cleared_answer_ids ?? []);
@@ -451,6 +452,11 @@ export default function QuestionsListPage() {
     } catch (err) {
       console.error("Failed to sync pending sections:", err);
       setIsSyncError(true);
+      setToastMessage(
+        t[
+          "Sending the match request failed. Please check your connection and try again."
+        ] ?? "Sending the match request failed. Please check your connection and try again."
+      );
     } finally {
       setIsSyncing(false);
     }
diff --git a/src/components/Componentes/button.tsx b/src/components/Componentes/button.tsx
index 0c9008c..5c013dc 100644
--- a/src/components/Componentes/button.tsx
+++ b/src/components/Componentes/button.tsx
@@ -153,7 +153,47 @@ export function Button({
     );
   };
 
-  const button = (
+  const content = isLoading ? (
+    <LoadingThreeDot />
+  ) : (
+    <span className="flex w-full items-center justify-center gap-2">
+      {renderArrow("left")}
+      <span className="flex min-w-0 flex-col items-center justify-center">
+        <span className="flex items-center justify-center gap-2 text-center group-16 font-semibold leading-none">
+          {children}
+        </span>
+        {description && !isOutlined ? (
+          <span
+            id={countdownId}
+            className="mt-1 text-center group-10 font-semibold leading-none text-white"
+          >
+            {description}
+          </span>
+        ) : null}
+      </span>
+      {countdownLocked ? (
+        <span className="shrink-0">
+          <CountdownProgress value={remainingSeconds} progress={progress} />
+        </span>
+      ) : (
+        renderArrow("right")
+      )}
+    </span>
+  );
+
+  if (href) {
+    return (
+      <Link
+        href={localizePath(href, locale)}
+        aria-disabled={isDisabled}
+        className={`${baseClassName} ${isDisabled ? "pointer-events-none" : ""}`}
+      >
+        {content}
+      </Link>
+    );
+  }
+
+  return (
     <button
       {...props}
       type={type}
@@ -161,41 +201,9 @@ export function Button({
       aria-describedby={description && !isOutlined ? countdownId : undefined}
       className={baseClassName}
     >
-      {isLoading ? (
-        <LoadingThreeDot />
-      ) : (
-        <span className="flex w-full items-center justify-center gap-2">
-          {renderArrow("left")}
-          <span className="flex min-w-0 flex-col items-center justify-center">
-            <span className="flex items-center justify-center gap-2 text-center group-16 font-semibold leading-none">
-              {children}
-            </span>
-            {description && !isOutlined ? (
-              <span
-                id={countdownId}
-                className="mt-1 text-center group-10 font-semibold leading-none text-white"
-              >
-                {description}
-              </span>
-            ) : null}
-          </span>
-          {countdownLocked ? (
-            <span className="shrink-0">
-              <CountdownProgress value={remainingSeconds} progress={progress} />
-            </span>
-          ) : (
-            renderArrow("right")
-          )}
-        </span>
-      )}
+      {content}
     </button>
   );
-
-  return href ? (
-    <Link href={localizePath(href, locale)}>{button}</Link>
-  ) : (
-    button
-  );
 }
 
 type CountdownProgressProps = {
diff --git a/src/components/Componentes/question-answer-storage.tsx b/src/components/Componentes/question-answer-storage.tsx
index 83d63de..9e4e578 100644
--- a/src/components/Componentes/question-answer-storage.tsx
+++ b/src/components/Componentes/question-answer-storage.tsx
@@ -317,6 +317,7 @@ export function QuestionAnswersProvider({
   const storageKeyRef = useRef(storageKey);
   const slugRef = useRef(slug);
   const backendFieldsRef = useRef<MarriageField[]>([]);
+  const versionRef = useRef<number | undefined>(undefined);
   const dirtyKeysRef = useRef(new Set<string>());
 
   const { data: profile } = useMarriageProfileQuery();
@@ -331,12 +332,14 @@ export function QuestionAnswersProvider({
     slugRef.current = slug;
     questionsRef.current = questions;
     backendFieldsRef.current = serverSectionData?.data || [];
+    versionRef.current = serverSectionData?.version;
   }, [
     answers,
     hasPendingSync,
     slug,
     questions,
     serverSectionData?.data,
+    serverSectionData?.version,
   ]);
 
   useEffect(() => {
@@ -491,6 +494,7 @@ export function QuestionAnswersProvider({
         fields: nextDirtyKey
           ? fullPayload.fields.filter((field) => field.key === nextDirtyKey)
           : [],
+        version: versionRef.current,
       };
       const revision = answersRevisionRef.current;
 
@@ -591,7 +595,7 @@ export function QuestionAnswersProvider({
       const pendingFields = fullPayload.fields.filter((field) =>
         dirtyKeysRef.current.has(field.key),
       );
-      const payload = { ...fullPayload, fields: pendingFields };
+      const payload = { ...fullPayload, fields: pendingFields, version: versionRef.current };
       const revision = answersRevisionRef.current;
 
       if (payload.fields.length === 0) {
@@ -616,6 +620,7 @@ export function QuestionAnswersProvider({
       fetch(getKeepalivePatchUrl(slugRef.current), {
         body: JSON.stringify({
           answers: answersPayload,
+          version: payload.version,
         }),
         credentials: "include",
         headers,
diff --git a/src/hooks/marriage/types.ts b/src/hooks/marriage/types.ts
index 20d8fe9..77d7e6f 100644
--- a/src/hooks/marriage/types.ts
+++ b/src/hooks/marriage/types.ts
@@ -148,12 +148,14 @@ export type MarriageSectionData = {
   total_steps: number;
   completion_percent: number;
   updated_at: string | null;
+  version?: number;
 };
 
 export type UpdateMarriageSectionDataPayload = {
   current_step: number;
   total_steps?: number;
   fields: MarriageField[];
+  version?: number;
 };
 
 export type MarriageQuestionState = {
diff --git a/src/hooks/marriage/use-form-schema.ts b/src/hooks/marriage/use-form-schema.ts
index 0d2c644..e6b2630 100644
--- a/src/hooks/marriage/use-form-schema.ts
+++ b/src/hooks/marriage/use-form-schema.ts
@@ -77,12 +77,14 @@ export interface FormOverviewSection extends Omit<FormSection, "cards"> {
 
 export interface FormOverviewResponse {
   form_id: string;
+  version: number;
   sections: FormOverviewSection[];
   progress: FormSchemaResponse["progress"];
 }
 
 export interface FormSectionResponse {
   form_id: string;
+  version: number;
   section: FormSection;
   answers: FormSchemaResponse["answers"];
   progress: FormSchemaResponse["progress"];
diff --git a/src/hooks/marriage/use-section-data.ts b/src/hooks/marriage/use-section-data.ts
index 84ce21d..e0d9671 100644
--- a/src/hooks/marriage/use-section-data.ts
+++ b/src/hooks/marriage/use-section-data.ts
@@ -25,10 +25,11 @@ type AnswersPayloadItem = {
 
 async function patchAnswers(
   answersPayload: AnswersPayloadItem[],
+  version?: number,
 ): Promise<ProfileAnswersPatchResult> {
   const response = await http.patch<ProfileAnswersPatchResult>(
     ANSWERS_ENDPOINT,
-    { answers: answersPayload },
+    { answers: answersPayload, version },
   );
   return response.data;
 }
@@ -43,7 +44,7 @@ export async function updateMarriageSectionData(
     option_id: f.option_id || undefined,
   }));
 
-  const data = await patchAnswers(answersPayload);
+  const data = await patchAnswers(answersPayload, payload.version);
 
   const prog = data.affected_sections[slug] ||
     data.progress.sections_progress[slug] || {
@@ -204,6 +205,7 @@ export function useMarriageSectionDataQuery(
             data: fields,
             ...progress,
             updated_at: null,
+            version: query.data.version,
           };
         })()
       : undefined,