Certificate verification failed! CERT_NOT_YET_VALID

Until now, I used LetsEncrypt for cPanel plugin for AutoSSL as well as Hostname SSL. Today, the SSL expired but the new SSL is not getting issued or maybe not getting installed. Tried checkallsslcerts as well but still no new SSL for the hostname. As a last resort, I installed certbot. It issued me a new SSL pretty quick but when I try to install it on WHM > Manage Service SSL Certificates, I get the error: Calendar, cPanel, WebDisk, Webmail, and WHM Services Certificate verification failed! CERT_NOT_YET_VALID Dovecot Mail Server Certificate verification failed! CERT_NOT_YET_VALID Exim (SMTP) Server Certificate verification failed! CERT_NOT_YET_VALID FTP Server Certificate verification failed! CERT_NOT_YET_VALID
SSL Certificate is new and Valid. [root@server ~]# openssl version OpenSSL 1.0.2k-fips 26 Jan 2017
[root@server ~]# rpm -qa | grep openssl alt-nodejs11-openssl-1.1.0i-1.el7.x86_64 alt-nodejs12-openssl-libs-1.1.1b-1.el7.x86_64 alt-nodejs14-openssl-libs-1.1.1b-2.el7.x86_64 alt-nodejs10-openssl-1.1.0i-1.el7.x86_64 alt-nodejs11-openssl-libs-1.1.0i-1.el7.x86_64 alt-nodejs14-openssl-devel-1.1.1b-2.el7.x86_64 ea-openssl-1.0.2u-1.el7.cloudlinux.x86_64 imunify360-webshield-openssl-1.1.1g-1.el7.x86_64 alt-nodejs10-openssl-devel-1.1.0i-1.el7.x86_64 alt-nodejs14-openssl-1.1.1b-2.el7.x86_64 openssl-1.0.2k-22.el7_9.x86_64 openssl-libs-1.0.2k-22.el7_9.x86_64 jetphp73-openssl-7.3.14.1-1.x86_64 ea-ruby27-rubygem-openssl-27.2.7.4.2.1.2-1.el7.cloudlinux.x86_64 ea-openssl11-devel-1.1.1l-1.el7.cloudlinux.x86_64 alt-openssl-1.0.2k-2.el7.cloudlinux.11.x86_64 alt-nodejs10-openssl-libs-1.1.0i-1.el7.x86_64 alt-nodejs12-openssl-1.1.1b-1.el7.x86_64 ea-openssl11-1.1.1l-1.el7.cloudlinux.x86_64 alt-openssl-libs-1.0.2k-2.el7.cloudlinux.11.x86_64 alt-openssl11-1.1.1d-2.el7.x86_64 alt-openssl11-libs-1.1.1d-2.el7.x86_64 openssl-devel-1.0.2k-22.el7_9.x86_64
What can be the error?