Need AWS Expert to Disable Firewall from SSH

Job ID: 33025936

Budget: ₹400 – ₹750 INR

I have hosted my WordPress using AWS EC2 Instance.
Current I am having the error: cURL error 6: Could not resolve host
I am also unable to connect to my CentOS Panel.

I have taken up basic Support from Amazon Web Services. As per them, I have to stop the Firewall for the Same. Need your help to fix these issues.
Also, If feasible will take montly AWS Support from you.
Note we are using CentOs.