diff --git a/homeassistant/components/lametric/config_flow.py b/homeassistant/components/lametric/config_flow.py
index 36dcdf26ed6..05c5dea77d1 100644
--- a/homeassistant/components/lametric/config_flow.py
+++ b/homeassistant/components/lametric/config_flow.py
@@ -249,7 +249,10 @@ class LaMetricFlowHandler(AbstractOAuth2FlowHandler, domain=DOMAIN):
         device = await lametric.device()
 
         if self.source != SOURCE_REAUTH:
-            await self.async_set_unique_id(device.serial_number)
+            await self.async_set_unique_id(
+                device.serial_number,
+                raise_on_progress=False,
+            )
             self._abort_if_unique_id_configured(
                 updates={CONF_HOST: lametric.host, CONF_API_KEY: lametric.api_key}
             )
diff --git a/homeassistant/components/lametric/strings.json b/homeassistant/components/lametric/strings.json
index 87bda01e305..0fd6f5a12dc 100644
--- a/homeassistant/components/lametric/strings.json
+++ b/homeassistant/components/lametric/strings.json
@@ -21,8 +21,11 @@
           "api_key": "You can find this API key in [devices page in your LaMetric developer account](https://developer.lametric.com/user/devices)."
         }
       },
-      "user_cloud_select_device": {
+      "cloud_select_device": {
         "data": {
+          "device": "Device"
+        },
+        "data_description": {
           "device": "Select the LaMetric device to add"
         }
       }