diff --git a/content/docs/help/troubleshooting.md b/content/docs/help/troubleshooting.md
index 62eb6d7..e812c03 100644
--- a/content/docs/help/troubleshooting.md
+++ b/content/docs/help/troubleshooting.md
@@ -9,8 +9,18 @@ images: []
 menu:
   docs:
     parent: "Help"
-weight: 620
+weight: 541
 toc: true
 ---
 
-Coming soon
+## Q: I just setup an instance but I am unable to login
+
+mCaptcha by default is configured to server at `localhost` hostname. If
+the instance is deployed at another hostname, please try setting
+`MCAPTCHA_SERVER_DOMAIN` environment variable to the hostname at which
+your instance is deployed or setting the equivalent in config.toml:
+
+```toml
+[server]
+domain=mydomain
+```