diff --git a/javascript/sdppp-comfy.js b/javascript/sdppp-comfy.js
index 7054da8..154a305 100644
--- a/javascript/sdppp-comfy.js
+++ b/javascript/sdppp-comfy.js
@@ -22,7 +22,7 @@
 				transports: ["websocket"],
 				path: '/sd-ppp/',
 				query: {
-					version: 1,
+					api_level: 2,
 					type: 'comfyui'
 				}
 			});
diff --git a/javascript/sdppp-sd.js b/javascript/sdppp-sd.js
index 53acdb1..b6bcc12 100644
--- a/javascript/sdppp-sd.js
+++ b/javascript/sdppp-sd.js
@@ -103,7 +103,7 @@
                 transports: ["websocket"],
                 path: '/sd-ppp/',
                 query: {
-                    version: 1,
+                    api_level: 2,
                     type: 'sd'
                 }
             });
diff --git a/photoshop/dist/index.js b/photoshop/dist/index.js
index b20977f..7b141a5 100644
--- a/photoshop/dist/index.js
+++ b/photoshop/dist/index.js
@@ -99,6 +99,7 @@ class Main extends react__WEBPACK_IMPORTED_MODULE_0__.Component {
     backendURL: '',
     isConnected: false,
     isReconnecting: false,
+    lastConnectErrorMessage: '',
     pageInstances: []
   };
   componentDidMount() {
@@ -108,7 +109,8 @@ class Main extends react__WEBPACK_IMPORTED_MODULE_0__.Component {
       this.setState({
         isConnected: instance?.isConnected,
         isReconnecting: instance?.isReconnecting,
-        backendURL: instance ? instance.backendURL : ''
+        backendURL: instance ? instance.backendURL : '',
+        lastConnectErrorMessage: instance?.lastErrorMessage
       });
     });
     _system_ComfyConnection__WEBPACK_IMPORTED_MODULE_1__["default"].onPageInstancesChange(data => {
@@ -153,7 +155,7 @@ class Main extends react__WEBPACK_IMPORTED_MODULE_0__.Component {
       className: "status-icon"
     }, "\u2B24"), /*#__PURE__*/react__WEBPACK_IMPORTED_MODULE_0__.createElement("div", {
       className: "status-text"
-    }, this.state.isConnected ? 'connected' : this.state.isReconnecting ? 'reconnecting...' : 'disconnected')), /*#__PURE__*/react__WEBPACK_IMPORTED_MODULE_0__.createElement("sp-button", {
+    }, this.state.isConnected ? 'connected' : this.state.isReconnecting ? 'reconnecting...' : this.state.lastConnectErrorMessage?.toString() || 'disconnected')), /*#__PURE__*/react__WEBPACK_IMPORTED_MODULE_0__.createElement("sp-button", {
       id: "connect-btn",
       variant: "primary",
       onClick: this.doConnectOrDisconnect.bind(this)
@@ -249,6 +251,7 @@ class ComfyConnection {
   backendURL = '';
   serverType = '';
   interval = null;
+  lastErrorMessage = '';
   constructor(backendURL) {
     ComfyConnection.instance = this;
     this.backendURL = backendURL.replace(/\/*$/, '');
@@ -275,7 +278,7 @@ class ComfyConnection {
       transports: ["websocket"],
       path: '/sd-ppp/',
       query: {
-        version: 1,
+        api_level: 2,
         type: 'photoshop'
       }
     });
@@ -286,10 +289,12 @@ class ComfyConnection {
         layers: allLayers
       });
     }, 3000);
+    this.lastErrorMessage = '';
     socket.on('connect_error', error => {
       if (socket.active) {
         console.error(`connect_error ${error} reconnecting...`);
       } else {
+        this.lastErrorMessage = error;
         console.error(`connect_error ${error} disconnected`);
       }
       ComfyConnection._callConnectStateChange();
diff --git a/photoshop/src/panels/Main.jsx b/photoshop/src/panels/Main.jsx
index 4eaeda7..dc60e32 100644
--- a/photoshop/src/panels/Main.jsx
+++ b/photoshop/src/panels/Main.jsx
@@ -6,6 +6,7 @@ export default class Main extends React.Component {
         backendURL: '',
         isConnected: false,
         isReconnecting: false,
+        lastConnectErrorMessage: '',
         pageInstances: []
     }
 
@@ -16,7 +17,8 @@ export default class Main extends React.Component {
             this.setState({
                 isConnected: instance?.isConnected,
                 isReconnecting: instance?.isReconnecting,
-                backendURL: instance ? instance.backendURL : ''
+                backendURL: instance ? instance.backendURL : '',
+                lastConnectErrorMessage: instance?.lastErrorMessage
             })
         });
         ComfyConnection.onPageInstancesChange((data) => {
@@ -63,7 +65,7 @@ export default class Main extends React.Component {
                         <div className="status-text">{(
                             this.state.isConnected ? 'connected' : (
                                 this.state.isReconnecting ? 'reconnecting...' :
-                                    'disconnected'
+                                    (this.state.lastConnectErrorMessage?.toString() || 'disconnected')
                             )
                         )}</div>
                     </div>
diff --git a/photoshop/src/system/ComfyConnection.js b/photoshop/src/system/ComfyConnection.js
index dd5b965..bc8d6d5 100644
--- a/photoshop/src/system/ComfyConnection.js
+++ b/photoshop/src/system/ComfyConnection.js
@@ -50,6 +50,7 @@ class ComfyConnection {
     backendURL = '';
     serverType = '';
     interval = null;
+    lastErrorMessage = '';
     constructor(backendURL) {
         ComfyConnection.instance = this;
         this.backendURL = backendURL.replace(/\/*$/, '');
@@ -78,7 +79,7 @@ class ComfyConnection {
             transports: ["websocket"],
             path: '/sd-ppp/',
             query: {
-                version: 1,
+                api_level: 2,
                 type: 'photoshop'
             }
         });
@@ -90,10 +91,12 @@ class ComfyConnection {
             )
         }, 3000)
 
+        this.lastErrorMessage = '';
         socket.on('connect_error', (error) => {
             if (socket.active) {
                 console.error(`connect_error ${error} reconnecting...`)
             } else {
+                this.lastErrorMessage = error
                 console.error(`connect_error ${error} disconnected`)
             }
             ComfyConnection._callConnectStateChange();
diff --git a/sdppp_python/sdppp.py b/sdppp_python/sdppp.py
index fbfc970..d1591a5 100644
--- a/sdppp_python/sdppp.py
+++ b/sdppp_python/sdppp.py
@@ -37,8 +37,10 @@ class SDPPP:
             qs = environ['QUERY_STRING']
             
             qsobj = dict(x.split('=') for x in qs.split('&'))
+            if 'api_level' not in qsobj or qsobj['api_level'] != "2":
+                raise socketio.exceptions.ConnectionRefusedError('version mismatch, please reinstall PS plugin')
             if 'type' not in qsobj:
-                raise socketio.exceptions.ConnectionRefusedError('instance type missed in query')
+                raise socketio.exceptions.ConnectionRefusedError('instance type not recognized')
 
             elif qsobj['type'] == 'photoshop':
                 if len(self.photoshop_instances) > 0: