Hi @lusynda sorry for my slow response.
Were you able to get Endpoint to appear in the Administration tab? If not, could you share the 10 logs before and after that CURL/SSL error log you reported to help give more context? Also, can you share the steps you used on your CentOS 7 host to add the root CA certificate so Agent could connect?
When you said "After viewing the data, it seems that there are logs comming up the elastic in data stream form" did you mean you see data appearing in Elastic indices? What index names do you see data streaming to?