Make note of the fact that the API needs to be subscribed to.

README.md

@@ -22,7 +22,7 @@ it will do anything.
 The integration can be added from the Integrations configuration screen.
 
 API keys can be obtained by registering on the
-[Metlink Developer Portal](https://opendata.metlink.org.nz/).
+[Metlink Developer Portal](https://opendata.metlink.org.nz/).  Be sure to subscribe to the "Metlink Open Data API". Currently this is the only API they offer, and is free, but is still unsubscribed by default.
 
 If you prefer to configure using yaml instead of the UI, add something like
 the following to your `config/configuration.yaml`:

custom_components/metlink/manifest.json

@@ -8,5 +8,5 @@
     "issue_tracker": "https://github.com/make-all/metlink-nz/issues",
     "name": "Metlink Wellington Transport",
     "requirements": ["isodate==0.6.0"],
-    "version": "1.0.0"
+    "version": "1.0.1"
 }

custom_components/metlink/translations/en.json

@@ -1,7 +1,7 @@
 {
     "config": {
 	"error": {
-	    "auth": "The api key provided is not valid."
+	    "auth": "The api key provided is not valid. Check you have subscribed to the Metlink Open Data API."
 	},
 	"step": {
 	    "user": {