If your Orbi router is not connecting to a new modem, there are a few troubleshooting steps to resolve the issue. First, ensure that all cables are securely connected and power-cycle both the modem and router. If you still see the "Orbi Not Connected to Internet" error, log in to your Orbi router through orbilogin.com and check the internet settings. In some cases, the new modem may require the router to be set to AP (Access Point) mode, or it may need manual IP configuration. Also, make sure your modem is fully activated and compatible with the Orbi router. Resetting both the modem and router can often fix the issue. If problems persist, contacting your internet service provider for additional assistance may be necessary.