Update unifi_controller.md

docs/widgets/info/unifi_controller.md

@@ -15,6 +15,20 @@ An optional 'site' parameter can be supplied, if it is not the widget will use t
 
 <img width="162" alt="unifi_infowidget" src="https://user-images.githubusercontent.com/4887959/197706832-f5a8706b-7282-4892-a666-b7d999752562.png">
 
+!!!
+
+    A UI account with 2FA will not work, to get around this:
+
+    1. Create a new user.
+    2. Check `Restrict to local access only`.
+    3. Set the username. eg. `remote_stats`.
+    4. Set a strong password.
+    5. Set permissions:
+        1. Uncheck `Use a pre-defined role`.
+        2. Set `Network` to `View Only`
+        3. Set all other options to `None`
+    6. Click `Add`
+
 ```yaml
 - unifi_console:
     url: https://unifi.host.or.ip:port