diff --git a/src/slic3r/GUI/Auth.cpp b/src/slic3r/GUI/Auth.cpp
index 54e1194858..0006789404 100644
--- a/src/slic3r/GUI/Auth.cpp
+++ b/src/slic3r/GUI/Auth.cpp
@@ -380,7 +380,6 @@ std::string CodeChalengeGenerator::sha256(const std::string& input)
 {
     HCRYPTPROV          prov_handle = NULL;
     HCRYPTHASH          hash_handle = NULL;
-    std::vector<BYTE>   buffer(1024);
     DWORD               hash_size = 0;
     DWORD               buffer_size = sizeof(DWORD);
     std::string         output;
@@ -423,13 +422,7 @@ std::string CodeChalengeGenerator::sha256(const std::string& input) {
     unsigned char digest[CC_SHA256_DIGEST_LENGTH];
     CC_SHA256_Final(digest, &sha256);
 
-    // Convert the result to a string
-    char hashString[CC_SHA256_DIGEST_LENGTH * 2 + 1];
-    for (int i = 0; i < CC_SHA256_DIGEST_LENGTH; i++) {
-        sprintf(&hashString[i * 2], "%02x", digest[i]);
-    }
-
-    return std::string(hashString);
+    return std::string(reinterpret_cast<char*>(digest), CC_SHA256_DIGEST_LENGTH);
 }
 #else
 std::string CodeChalengeGenerator::sha256(const std::string& input) {
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index c75f1a86dc..2e34055b44 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -870,7 +870,7 @@ Plater::priv::priv(Plater *q, MainFrame *main_frame)
         bring_instance_forward();
     });
 
-    this->q->Bind(EVT_OPEN_PRUSAAUTH, [this](OpenPrusaAuthEvent& evt) {
+    this->q->Bind(EVT_OPEN_PRUSAAUTH, [](OpenPrusaAuthEvent& evt) {
        BOOST_LOG_TRIVIAL(info)  << "open browser: " << evt.data;
        // first register url to be sure to get the code back
        //auto downloader_worker = new DownloaderUtils::Worker(nullptr);
@@ -5861,12 +5861,10 @@ void Plater::connect_gcode()
         return;
     }
 
-    // TODO: get api key from dialog_msg and upload the file
-    // api key is not currently in the message
-    std::string api_key;
+    // TODO: break if printer not ready
 
-    // This is private key for our printer "Loki" - DELETE!
-    //api_key = "PAARWQ2Ibd69fdbf";
+    // get api key from dialog_msg and upload the file
+    std::string api_key = p->user_account->get_apikey_from_json(dialog_msg);
     if (api_key.empty())
     {
         return;
diff --git a/src/slic3r/GUI/UserAccount.cpp b/src/slic3r/GUI/UserAccount.cpp
index 1868d35805..36b15426ca 100644
--- a/src/slic3r/GUI/UserAccount.cpp
+++ b/src/slic3r/GUI/UserAccount.cpp
@@ -270,4 +270,21 @@ std::string UserAccount::get_nozzle_from_json(const std::string& message) const
     return out;
 }
 
+std::string UserAccount::get_apikey_from_json(const std::string& message) const
+{
+    std::string out;
+    try {
+        std::stringstream ss(message);
+        pt::ptree ptree;
+        pt::read_json(ss, ptree);
+
+        out = parse_tree_for_param(ptree, "prusaconnect_api_key");
+        //assert(!out.empty());
+    }
+    catch (const std::exception& e) {
+        BOOST_LOG_TRIVIAL(error) << "Could not parse prusaconnect message. " << e.what();
+    }
+    return out;
+}
+
 }} // namespace slic3r::GUI
\ No newline at end of file
diff --git a/src/slic3r/GUI/UserAccount.hpp b/src/slic3r/GUI/UserAccount.hpp
index dab6fed62b..12a7d036a3 100644
--- a/src/slic3r/GUI/UserAccount.hpp
+++ b/src/slic3r/GUI/UserAccount.hpp
@@ -60,6 +60,7 @@ public:
     // standalone utility methods
     std::string get_model_from_json(const std::string& message) const;
     std::string get_nozzle_from_json(const std::string& message) const;
+    std::string get_apikey_from_json(const std::string& message) const;
 private:
     void set_username(const std::string& username, AppConfig* app_config);
     void reset(AppConfig* app_config);
diff --git a/src/slic3r/GUI/WebView.cpp b/src/slic3r/GUI/WebView.cpp
index 0662447d76..e9a16f3e10 100644
--- a/src/slic3r/GUI/WebView.cpp
+++ b/src/slic3r/GUI/WebView.cpp
@@ -154,7 +154,6 @@ bool WebView::run_script(wxWebView *webView, wxString const &javascript)
         return webView2->ExecuteScript(wrapJS.GetWrappedCode(), NULL) == 0;
 #elif defined __WXMAC__
         WKWebView * wkWebView = (WKWebView *) webView->GetNativeBackend();
-        int               count   = 0;
         wxJSScriptWrapper wrapJS(javascript, wxJSScriptWrapper::OutputType::JS_OUTPUT_STRING);
         Slic3r::GUI::WKWebView_evaluateJavaScript(wkWebView, wrapJS.GetWrappedCode(), nullptr);
         return true;
diff --git a/src/slic3r/GUI/WebViewDialog.cpp b/src/slic3r/GUI/WebViewDialog.cpp
index 01b355caec..739e1723e7 100644
--- a/src/slic3r/GUI/WebViewDialog.cpp
+++ b/src/slic3r/GUI/WebViewDialog.cpp
@@ -463,7 +463,7 @@ void WebViewDialog::run_script(const wxString& javascript)
 {
     if (!m_browser) 
         return;
-    bool res = WebView::run_script(m_browser, javascript);
+    //bool res = WebView::run_script(m_browser, javascript);
 }
 
 
diff --git a/src/slic3r/GUI/WifiConfigDialog.cpp b/src/slic3r/GUI/WifiConfigDialog.cpp
index 865ed36149..d40293b3f9 100644
--- a/src/slic3r/GUI/WifiConfigDialog.cpp
+++ b/src/slic3r/GUI/WifiConfigDialog.cpp
@@ -208,7 +208,7 @@ void WifiConfigDialog::rescan_networks(bool select)
     std::string current = m_wifi_scanner->get_current_ssid();
     const auto& map = m_wifi_scanner->get_map();
     m_ssid_combo->Clear();
-    for (const auto &pair : map) {
+    for (const auto& pair : map) {
         m_ssid_combo->Append(pair.first);
         // select ssid of current network (if connected)
         if (current == pair.first)