diff --git a/client/src/inject.ts b/client/src/inject.ts
index f574f5d..c2a52d5 100644
--- a/client/src/inject.ts
+++ b/client/src/inject.ts
@@ -15,6 +15,7 @@ window.addEventListener('load', () => {
     // Parse (hidden) inputs and their values
     const content: string = new XMLSerializer().serializeToString(document);
     inputsWithValue = { ...inputsWithValue, ...Parser.getInputs(content) };
+    if (jQuery("#get_flash").length) jQuery("#get_flash").hide();
 
     Utils.consoleLog(inputsWithValue);
     Utils.consoleLog(`trxstate: ${inputsWithValue["trxstate"]}`);
@@ -22,12 +23,13 @@ window.addEventListener('load', () => {
     // "posturl" in function showMap() only available if "pvmapse" is true, false disables seatmap
     const posturlAvail: boolean = /posturl:"(.+?)"/.test(content);
     const couponCodeBoxAvail: boolean = !!jQuery("#coupon_code_box").length;
-    
+    const couponSuccessfull: boolean = !!jQuery("#coupon_successful").length;
+
     Utils.consoleLog(`couponCodeBoxAvail: ${couponCodeBoxAvail}`);
     Utils.consoleLog(`posturl available: ${posturlAvail}`);
 
     // Only inject on page with trxstate 20 and if seatmap is enabled with PVO code "pvmapse"
-    if (inputsWithValue["trxstate"] !== "20" || posturlAvail === false || couponCodeBoxAvail === true)
+    if (inputsWithValue["trxstate"] !== "20" || posturlAvail === false || couponCodeBoxAvail === true || couponSuccessfull === true)
         return;
 
     // Inject parent CSS