Not able to renew SSL let'sencrytpt certificate

Hi

I am new to this platform and I am trying to update the cert on my Jenkins web

I have tried various methods with no avail , can someone help?

The Jenkins is running on ec2 Centos 7 in AWS Env

I was able to generate a let’secrypt cert but the issue is whoever used to renew this has left the business and I am not able to point to the cert locations where Jenkins can access it and url still pointing to the old cert

Thanks in advance