Added note about proxy online mode

Author: RaphiMC

README.md

@@ -12,13 +12,14 @@ The modification has been confirmed to work on Vanilla, Spigot, Paper, Fabric, F
 1. Download the latest version from [GitHub Actions](https://github.com/ViaVersionAddons/ViaProxyAuthHook/actions).
 2. Put the jar file into the plugins folder of ViaProxy
 3. Run ViaProxy once to generate the config file
-4. Copy the secret key from the AuthHook config file (You will need it later for the server)
-5. Download the latest version of the AuthHook agent (Same link as step 1)
-6. Put the AuthHook agent into the same folder as the server jar
-7. Add the following JVM argument to the server start command: `-javaagent:ViaProxyAuthHook-x.x.x.jar` (Replace x.x.x with the version of the AuthHook agent you downloaded)
-8. Start the server once to generate the config file
-9. Open the config file (It's in the same folder as the server jar) and set the secret key to the key you copied in step 4
-10. Start both the server and ViaProxy. You can now switch the authentication mode to AuthHook (Use `AUTH_HOOK` for CLI or config file).
+4. Make sure to enable "Proxy Online Mode" in the ViaProxy CLI or config file
+5. Copy the secret key from the AuthHook config file (You will need it later for the server)
+6. Download the latest version of the AuthHook agent (Same link as step 1)
+7. Put the AuthHook agent into the same folder as the server jar
+8. Add the following JVM argument to the server start command: `-javaagent:ViaProxyAuthHook-x.x.x.jar` (Replace x.x.x with the version of the AuthHook agent you downloaded)
+9. Start the server once to generate the config file
+10. Open the config file (It's in the same folder as the server jar) and set the secret key to the key you copied in step 4
+11. Start both the server and ViaProxy. You can now switch the authentication mode to AuthHook (Use `AUTH_HOOK` for CLI or config file).
 
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