diff --git a/src/services/EmailVerifySvr.ts b/src/services/EmailVerifySvr.ts
index e6c28d9..06c2a23 100644
--- a/src/services/EmailVerifySvr.ts
+++ b/src/services/EmailVerifySvr.ts
@@ -8,16 +8,28 @@ export class EmailVerifySvr {
    * Checks if the user's email is verified
    * @returns an object containing the verification status and the user's email
    */
-  public async checkEmailVerified() {
+  public async checkEmailVerified(): Promise<{
+    verified: number;
+    email: string | null;
+  }> {
     let res = await isEmailVerified();
-    let verified = 0;
-    let email = "";
-    if (!res.errcode) {
-      verified = res.data.verified;
-      email = res.data?.email;
+    if (res.errcode) {
+      throw new Error("Failed to fetch email verification status"); //Throw error if call to the checking function fails
     }
+
+    const { data } = res;
+    if (!data) {
+      throw new Error("Invalid response from the server"); //Throw error if the expected data structure is missing
+    }
+
+    const { verified, email } = data;
+    if (!email || typeof verified !== "number") {
+      throw new Error("Invalid values returned from server"); //Throw error if the data doesn't have the expected types or values
+    }
+
     return { verified, email };
   }
+
   /**
    * Begins the process of verifying the user's email
    * @param email - the email to be verified
diff --git a/src/services/PaySvr.ts b/src/services/PaySvr.ts
index 9ccb2ca..c41283b 100644
--- a/src/services/PaySvr.ts
+++ b/src/services/PaySvr.ts
@@ -10,6 +10,19 @@ export class PaySvr {
    * @returns The result of the alchemyPrePay function.
    */
   public async alchemyPrePay(data: IPayData) {
-    return alchemyPrePay(data);
+    let res = await alchemyPrePay(data);
+    if (res.errcode) {
+      throw new Error(res.errmsg);
+    }
+    if (!res.data) {
+      throw new Error("No data returned");
+    }
+    const url = res.data.url;
+    if (!url) {
+      throw new Error("No url returned");
+    }
+    jsb.showWebPage(url);
+    // jsb.openURL(url);
+    return true;
   }
 }