Hello! I see you're encountering a "server issue" error when trying to connect to the NIIMBOT app server. Let’s get to the bottom of this together.

To help me guide you correctly, can you tell me a bit more about when this happens? For example:
- Does the error appear right when you open the app or when performing a specific action (like logging in or printing)?
- Have you recently updated the NIIMBOT app on your device?
- Are you connected to the internet through Wi-Fi or mobile data, and have you tried switching between them?
- Have you tried restarting the app or your device?

While I wait for your details, here are some initial steps that often resolve server connection errors:

1. Check Your Internet Connection: Make sure your Windows system has full internet access. Try loading a website to confirm connectivity.

2. Restart the NIIMBOT App: Close it completely and reopen it. Sometimes this refresh helps reconnect to the server.

3. Reboot Your Device: Restart your Windows PC to clear any temporary glitches.

4. Update/Reinstall the NIIMBOT App: Make sure you have the latest version installed. If you already do, try uninstalling and reinstalling it.

5. Try Using a VPN: Some users have found using a VPN beneficial as it connects via a different server, which might bypass regional server issues.

If these don’t fix the problem, it could be a temporary server-side issue from NIIMBOT’s end. In that case, waiting a little while or checking NIIMBOT’s official social or support channels might help.

Could you try those and let me know which ones you’ve done and any additional info about the error occurrence? This will help me suggest the next best steps.