diff --git a/src/lib/appSwitchResume.js b/src/lib/appSwitchResume.js
index 178ccc8bb..e026e3acc 100644
--- a/src/lib/appSwitchResume.js
+++ b/src/lib/appSwitchResume.js
@@ -24,7 +24,7 @@ function getAppSwitchParamsWebFallback(): AppSwitchResumeParams | null {
       new URLSearchParams(window.location.search)
     );
     const {
-      buttonSessionID,
+      button_session_id: buttonSessionID,
       fundingSource,
       token: orderID,
       PayerID: payerID,
@@ -76,14 +76,18 @@ export function getAppSwitchResumeParams(): AppSwitchResumeParams | null {
   const {
     token,
     PayerID,
-    buttonSessionID,
+    button_session_id: buttonSessionID,
     billingToken,
     paymentID,
     subscriptionID,
-    vaultSetupToken,
+    vaultSetupToken: vaultToken,
+    approval_token_id: approvalTokenID,
+    approval_session_id: approvalSessionID,
     fundingSource,
   } = parseQuery(queryString);
 
+  const vaultSetupToken = vaultToken || approvalTokenID || approvalSessionID;
+
   const params: AppSwitchResumeParams = {
     orderID: token,
     buttonSessionID,
diff --git a/src/lib/appSwithResume.test.js b/src/lib/appSwithResume.test.js
index dbf604e06..0e8527fbc 100644
--- a/src/lib/appSwithResume.test.js
+++ b/src/lib/appSwithResume.test.js
@@ -26,7 +26,7 @@ describe("app switch resume flow", () => {
 
   test("should test fetching resume params when parameters are correctly passed", () => {
     vi.spyOn(window, "location", "get").mockReturnValue({
-      hash: `#onApprove?buttonSessionID=${buttonSessionID}&token=${orderID}&fundingSource=${fundingSource}`,
+      hash: `#onApprove?button_session_id=${buttonSessionID}&token=${orderID}&fundingSource=${fundingSource}`,
     });
 
     const params = getAppSwitchResumeParams();
@@ -55,7 +55,7 @@ describe("app switch resume flow", () => {
 
   test("should test null fetching resume params with invalid callback passed", () => {
     vi.spyOn(window, "location", "get").mockReturnValue({
-      hash: `#Unknown?buttonSessionID=${buttonSessionID}&token=${orderID}&fundingSource=${fundingSource}`,
+      hash: `#Unknown?button_session_id=${buttonSessionID}&token=${orderID}&fundingSource=${fundingSource}`,
     });
 
     const params = getAppSwitchResumeParams();
@@ -67,7 +67,7 @@ describe("app switch resume flow", () => {
 
   test("should test fetching multiple resume params when parameters are correctly passed", () => {
     vi.spyOn(window, "location", "get").mockReturnValue({
-      hash: `#onApprove?buttonSessionID=${buttonSessionID}&token=${orderID}&fundingSource=${fundingSource}&billingToken=BA-124&PayerID=PP-payer-122&paymentID=PAY-123&subscriptionID=I-1234&vaultSetupToken=VA-3`,
+      hash: `#onApprove?button_session_id=${buttonSessionID}&token=${orderID}&fundingSource=${fundingSource}&billingToken=BA-124&PayerID=PP-payer-122&paymentID=PAY-123&subscriptionID=I-1234&vaultSetupToken=VA-3`,
     });
 
     const params = getAppSwitchResumeParams();
@@ -87,9 +87,9 @@ describe("app switch resume flow", () => {
     expect(isAppSwitchResumeFlow()).toEqual(true);
   });
 
-  test("should test onApprove resume params when parameters are passed from web fallback", () => {
+  test("should test onApprove resume params when parameters are passed from web fallback with vaultSetupToken", () => {
     vi.spyOn(window, "location", "get").mockReturnValue({
-      search: `?buttonSessionID=${buttonSessionID}&token=${orderID}&fundingSource=${fundingSource}&vaultSetupToken=VA-3&PayerID=PP123456`,
+      search: `?button_session_id=${buttonSessionID}&token=${orderID}&fundingSource=${fundingSource}&vaultSetupToken=VA-3&PayerID=PP123456`,
     });
 
     const params = getAppSwitchResumeParams();
@@ -106,9 +106,9 @@ describe("app switch resume flow", () => {
     expect(isAppSwitchResumeFlow()).toEqual(true);
   });
 
-  test("should test onCancel resume params when parameters are passed from web fallback", () => {
+  test("should test onCancel resume params when parameters are passed from web fallback with approval_token_id", () => {
     vi.spyOn(window, "location", "get").mockReturnValue({
-      search: `?buttonSessionID=${buttonSessionID}&token=${orderID}&fundingSource=${fundingSource}&vaultSetupToken=VA-3`,
+      search: `?button_session_id=${buttonSessionID}&token=${orderID}&fundingSource=${fundingSource}&approval_token_id=VA-3`,
     });
 
     const params = getAppSwitchResumeParams();