Certain browser extensions, ad blockers or private networks may prevent you from accessing Craft's website or apps. "Server Not Found" or simply not loading the page are common errors but syncing problems may also be related to those conditions. Some of the apps that are known to cause these issues are: "Hush" and "Plume Guard".
If you experience this, try disabling these extensions, marking Craft's domain as secure in their configuration or using a different network. If the problem persists across different networks and cellular data, please contact us.