It was described in my previous post how to connect to the MongoDB Cloud in Navicat. If you are having trouble connecting, your IP address is probably not registered, though. If access is granted to your IP address, you will only be allowed to connect to your cluster from the GUI.
Go to the dashboard and click on “Network Access” as shown below.
Click on the “Add IP Address”. You will be prompted to the following dialog box.
If you aren’t sure about your IP address, click on “Add Current IP Address”, it will automatically detect your IP and adds it. You have the option to allow the IP address for a certain period of time.
Once your IP Address is added, try to connect through your GUI.
Good luck!!!