automatically use shared session when needed

index.html

@@ -63,8 +63,8 @@
 
     <div id="msdl-processing-error">
         <h2>Error</h2>
-        <p>An error has occurred while processing your request. Try clicking the use shared session button if reloading
-            the page does not work.</p>
+        <p>An error has occurred while processing your request. If reloading the page does not work, <a
+                href="https://massgrave.dev/contactus.html">contact us</a> or create an issue on GitHub.</p>
     </div>
 
     <div id="back-to-products">
@@ -72,10 +72,6 @@
         <button onClick="backToProducts();">Go back to the product list</button>
     </div>
 
-    <div id="use-shared-session">
-        <button onClick="useSharedSession();">Use shared session (use if download keeps failing)</button>
-    </div>
-
     <input id="msdl-session-id" type="hidden">
 </body>
 

js/msdl.js

@@ -9,7 +9,6 @@ const processingError = document.getElementById('msdl-processing-error');
 
 const productsList = document.getElementById('products-list');
 const backToProductsDiv = document.getElementById('back-to-products');
-const useSharedSessionDiv = document.getElementById('use-shared-session');
 
 const sharedSessionGUID = "47cbc254-4a79-4be6-9866-9c625eb20911";
 
@@ -41,7 +40,6 @@ function updateContent(content, response) {
 
     if (errorMessage) {
         processingError.style.display = "block";
-        useSharedSessionDiv.style.display = "block";
         return false;
     }
 
@@ -80,9 +78,14 @@ function onDownloadsXhrChange() {
     pleaseWait.style.display = "none";
     msContent.style.display = "block";
 
-    if (updateContent(msContent, this.responseText) && !sharedSession) {
+    let wasSuccessful = updateContent(msContent, this.responseText);
+
+    if (wasSuccessful && !sharedSession) {
         fetch(sessionUrl + sharedSessionGUID);
     }
+    else if (!sharedSession) {
+        useSharedSession()
+    }
 }
 
 function getLanguages(productId) {
@@ -111,7 +114,6 @@ function getDownload() {
 
 function backToProducts() {
     backToProductsDiv.style.display = 'none';
-    useSharedSessionDiv.style.display = 'none';
     productsList.style.display = 'block';
     msContent.style.display = 'none';
     pleaseWait.style.display = 'none';
@@ -124,7 +126,6 @@ function backToProducts() {
 function useSharedSession() {
     sharedSession = true;
     pleaseWait.style.display = "block";
-    useSharedSessionDiv.style.display = 'none';
     processingError.style.display = 'none';
 
     let url = langsUrl + "&productEditionId=" + window.location.hash.substring(1) + "&sessionId=" + sharedSessionGUID;