this url is only working if you’re on the machine running the webserver. devices within the same network should be able to access the CRM using your local ip, so e.g. http://192.168.0.15/suitecrm/. devices outside of your network need to use your external ip with proper port forwardings enabled first (if hosted on-premise).
You should keep in mind that your internal/external ip might change often. Internally, you can use a fixed IP instead, but you might need a DDNS service for permanent external access.
Hi,
sorry, but you need to describe what you did and how you configured your CRM much more detailed, with this level of information we have no angle to help.