diff --git a/Troubleshooting.md b/Troubleshooting.md
index 918bad0..f59e727 100644
--- a/Troubleshooting.md
+++ b/Troubleshooting.md
@@ -5,7 +5,10 @@ The authentication didn't complete correctly for some reason. This can be caused
 - Entering Steam credentials instead of Frontier credentials - see [Error: User not found](#error-user-not-found).
 
 ### 500 internal server error
-Frontier's authentication website sometimes gets overloaded and displays this error. Please try again later.
+Either:
+
+- You pressed the "Approve" button on Frontier's authentication website twice. This is harmless; if the app isn't displaying any error messages and isn't redirecting again to Frontier's authentication website then all is fine.
+- Frontier's authentication website sometimes gets overloaded and displays this error. Please try again later.
 
 ### Error: User not found
 Your Steam account may not be linked to your Frontier account (you can check whether you have any external accounts linked on the [Frontier store](https://www.frontierstore.net/frontier_partnerkeys/)).