9. How do I renew my SSL Certificate?
+ Renewing an SSL certificate involves generating a new Certificate Signing Request (CSR) and then submitting it to your certificate authority (CA). The CA will then validate your ownership of the domain name and reissue the certificate.
1. Generate a new CSR
2. Initiate the renewal process
3. Upload your new CSR
4. Verify domain ownership
5. Pay for the renewal
6. Download and install your new SSL certificate
More detailed information, You can learn more on this tutorial blog.