client-troubleshooting: clarify how to remove file (#379)

Author: nazarewk

src/pages/how-to/troubleshooting-client.mdx

@@ -331,8 +331,6 @@ the `config.json` file:
 - `/etc/netbird/config.json` for Linux/MacOS
 - `C:\ProgramData\netbird\config.json` for Windows
 
-You will need to remove the file manually to use the machine as a different user/Setup Key.
-
 You might get errors like below when trying to use Setup Key/different SSO user account during login:
 
 ```
@@ -349,6 +347,12 @@ The most notable examples of encountering the issue are:
 - a machine\'s Peer got removed from the Dashboard without clearing the file,
 - the user uses different browser/profile or selects the wrong account during SSO login at the start of the workday,
 
+To resolve the issue, you will need to remove the file manually to use the machine as a different user/Setup Key while the NetBird client daemon is stopped:
+
+1. `netbird service stop`
+2. `sudo rm /etc/netbird/config.json` (*nix) or `rm C:\ProgramData\netbird\config.json` (Windows)
+3. `netbird service start`
+
 ## Debugging access to network resources
 
 In this section we will be presenting methodology of troubleshooting access issues involving Netbird.