If your SSL certificate expires, your website and email services will still continue to function; however, visitors to your website may see a warning message indicating that your security has expired and advising them to proceed with caution. This can reduce traffic, lower visitor confidence, and make potential customers less likely to engage with your services or complete purchases. For this reason, it is highly recommended that you renew your SSL certificate(s).

What to do if you are using Rebel's SSL services:

Depending on who your web host is, there are different steps to take:

• Rebel's Classic Hosting or third-party web hosting: You will need to purchase a new SSL certificate and activate it for another year. 
  For a guide on purchasing and activating your SSL, please follow the articles below: 

  • Classic Hosting SSL steps 

  • Third-party web hosting SSL steps
     

• Plesk hosting: SSL is included with your plan and will automatically renew every three months.
  How to reissue your Plesk Let's Encrypt SSL