Help with You need to add your site IP to Moodl...

I installed the Moodle and Joomla sides of Joomdle and I also followed thoroughly the steps described for both of them, yet when I run the system check I receive the error You need to add your site IP to Moodle XML-RPC trusted hosts list.
I entered my site ip and I still get the same error.
Is there a way to find a solution to this?
Thanks in advance.

Hi.

Most likely, you did not enter the right IP address:
- Are you working locally or on a hosted domain?
- Can you tell the domain and IP you entered? (can do in private message if you prefer)