@sellarae
Please see if the following suggestions help if not please get back to us
Thanks for reaching out. From your description, it seems that after moving your web server to a new machine and updating your Let's Encrypt certificate, you can only access your domain from the server itself. All other devices on your Deco Mesh network receive a 'TLS handshake error bad certificate' when trying to connect, but the site works when you use mobile data (5G). This suggests the issue may be related to your Deco network or its settings.
Here are some steps to help you troubleshoot this issue:
1. Check if the issue is with your ISP or Deco network:
• Disconnect the main Deco from your modem and connect a PC directly to the modem. Try accessing your domain from the PC. If you still can't connect, the issue may be with your ISP or DNS propagation.
• If you can access your domain directly from the modem but not through Deco, the problem is likely with your Deco settings.
2. Ensure no VPN or network proxy is enabled on your devices, as these can sometimes interfere with HTTPS connections.
3. Update DNS settings:
• Open the Deco app and go to MORE > Internet Connection. Change the DNS server to 1.1.1.1 (Cloudflare) or 8.8.8.8 (Google).
• After updating the DNS server, reconnect your devices to the Deco network to ensure the new settings take effect.
4. Check Deco security features:
• On some Deco models, the 'Antivirus' or 'Real-Time Protection' features might block certain websites. Open the Deco app and check the Antivirus or Real-Time Protection history to see if your domain is being blocked.
5. Review Parental Control settings:
• Make sure there are no content filtering or website blocking rules that might affect your domain.
If you have tried all these steps and the issue persists, it could be related to DNS cache or certificate propagation delays. You may also want to reboot your Deco units and ISP modem to clear any cached data.
If you need further assistance, please let us know the results of these troubleshooting steps.
