diff --git a/pass/app/Crypto.js b/pass/app/Crypto.js
index af4533d23f66d0ce0d49672546b5f8d1dbe7f9f9..0dd03b82d82bc336636daea8b6c546f71b23dc1e 100644
--- a/pass/app/Crypto.js
+++ b/pass/app/Crypto.js
@@ -20,13 +20,20 @@ class Crypto {
   }
 
   async private_key_get(seed_date, expiration_date) {
-    let cache_key = "private_key_" + seed_date.format(this.#dayjs_format) + "_" + expiration_date.format(this.#dayjs_format);
-    console.log(cache_key);
+    let cache_key =
+      "private_key_" +
+      seed_date.format(this.#dayjs_format) +
+      "_" +
+      expiration_date.format(this.#dayjs_format);
     // Check if the private key already exists in cache
     let cached_key = await this.#redis.get(cache_key);
     let private_key = new NodeRSA();
     if (cached_key === null) {
-      let seed = config.get("crypto.private_key.seed") + seed_date.format(this.#dayjs_format) + "_" + expiration_date.format(this.#dayjs_format);
+      let seed =
+        config.get("crypto.private_key.seed") +
+        seed_date.format(this.#dayjs_format) +
+        "_" +
+        expiration_date.format(this.#dayjs_format);
       let sha512 = md.sha512.create();
       sha512.update(seed);
       seed = sha512.digest().toHex();
@@ -58,13 +65,20 @@ class Crypto {
     return private_key;
   }
 
-  async validateMetaGerPassCode(generation_month, expiration_month, metager_pass_codes) {
+  async validateMetaGerPassCode(
+    generation_month,
+    expiration_month,
+    metager_pass_codes
+  ) {
     // Check if codes are expired
     if (!this.#dayjs().isBefore(expiration_month, "month")) {
       return Promise.reject("Redeem Codes are expired.");
     }
 
-    let private_key = await this.private_key_get(generation_month, expiration_month);
+    let private_key = await this.private_key_get(
+      generation_month,
+      expiration_month
+    );
 
     let uuid_regexExp =
       /^[0-9a-fA-F]{8}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{4}\b-[0-9a-fA-F]{12}$/gi;
diff --git a/pass/app/Order.js b/pass/app/Order.js
index 156acd29edbbae744228d8e9c0f2aa2dc82ce073..fcca840583e2b9af23aefabd13d82b20234f7f13 100644
--- a/pass/app/Order.js
+++ b/pass/app/Order.js
@@ -33,6 +33,19 @@ class Order {
     return 50;
   }
 
+  static GET_ORDER_FILE_BASE_PATH(order_date) {
+    let order_path = config.get("storage.data_path");
+    if (process.env.NODE_ENV === "development") {
+      order_path = path.join(order_path, "development");
+    }
+    order_path = path.join(
+      order_path,
+      order_date.format("YYYY"),
+      order_date.format("MM")
+    );
+
+    return order_path;
+  }
   /**
    * Data stored in Redis Database
    */
@@ -67,15 +80,7 @@ class Order {
     this.#expires_at = dayjs(expires_at);
     this.#order_date = dayjs.unix(this.#order_id.substr(0, 10));
 
-    this.#order_path = config.get("storage.data_path");
-    if (process.env.NODE_ENV === "development") {
-      this.#order_path = path.join(this.#order_path, "development");
-    }
-    this.#order_path = path.join(
-      this.#order_path,
-      this.#order_date.format("YYYY"),
-      this.#order_date.format("MM")
-    );
+    this.#order_path = Order.GET_ORDER_FILE_BASE_PATH(this.#order_date);
 
     this.#amount = parseInt(amount);
     this.#unit_size = parseInt(unit_size);
@@ -167,13 +172,14 @@ class Order {
 
       let redis_key = Order.STORAGE_KEY_PREFIX + order_id;
 
-      let order_file = path.join(
-        this.#order_path,
-        this.#order_id.toString() + ".json"
-      );
       redis_client.hgetall(redis_key).then((order_data) => {
         if (Object.keys(order_data).length === 0) {
           // Checking FS for order
+          let order_date = dayjs.unix(order_id.substr(0, 10));
+          let order_file = path.join(
+            Order.GET_ORDER_FILE_BASE_PATH(order_date),
+            this.#order_id.toString() + ".json"
+          );
           let fs = require("fs");
           if (fs.existsSync(order_file)) {
             order_data = JSON.parse(fs.readFileSync(order_file));
@@ -196,7 +202,6 @@ class Order {
           );
         }
         loaded_order.set_create_mode(false);
-        console.log(loaded_order.getEncryptedSalesReceipts());
         resolve(loaded_order);
       });
     });
diff --git a/pass/config/default.json b/pass/config/default.json
index db5328c67858930255b802673a2d94774103e413..7de70918a296560acc289518c3852f74c6f89c07 100644
--- a/pass/config/default.json
+++ b/pass/config/default.json
@@ -6,45 +6,8 @@
         "data_path": "/data"
     },
     "keys": {
-        "charset": [
-            "a",
-            "b",
-            "c",
-            "d",
-            "e",
-            "f",
-            "g",
-            "h",
-            "i",
-            "j",
-            "k",
-            "l",
-            "m",
-            "n",
-            "o",
-            "p",
-            "q",
-            "r",
-            "s",
-            "t",
-            "u",
-            "v",
-            "w",
-            "x",
-            "y",
-            "z",
-            "0",
-            "1",
-            "2",
-            "3",
-            "4",
-            "5",
-            "6",
-            "7",
-            "8",
-            "9"
-        ],
-        "length": 8
+        "length": 8,
+        "charset": ["1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f", "g", "h", "j", "k", "m", "n", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"]
     },
     "crypto": {
         "hmac_integrity_seed": "<insert_secret_for_hmac_seed>",
diff --git a/pass/resources/js/checkout_paypal.js b/pass/resources/js/checkout_paypal.js
index 64147e13ed0afe2b17ec0357819293d3263fed49..19a5be6d6ace2ae43b9c563e5d61777074a063f6 100644
--- a/pass/resources/js/checkout_paypal.js
+++ b/pass/resources/js/checkout_paypal.js
@@ -63,6 +63,8 @@ function execute_payment_paypal(encrypted_sales_receipts) {
               },
               body: JSON.stringify({
                 order_id: document.querySelector("input[name=order_id]").value,
+                expires_at: document.querySelector("input[name=expires_at]")
+                  .value,
                 amount: document.querySelector("input[name=amount]").value,
                 unit_size: document.querySelector("input[name=unit_size]")
                   .value,
@@ -110,6 +112,7 @@ function cancelPayment(encrypted_sales_receipts) {
     },
     body: JSON.stringify({
       order_id: document.querySelector("input[name=order_id]").value,
+      expires_at: document.querySelector("input[name=expires_at]").value,
       amount: document.querySelector("input[name=amount]").value,
       unit_size: document.querySelector("input[name=unit_size]").value,
       price_per_unit: document.querySelector("input[name=price_per_unit]")