@Parsserv I received an email 30 days prior to the certificate expiring (I chose that option when I installed it)
I renewed/installed it early because I wasn’t sure how that renewal process worked and how long it would take. Because I didn’t wait until it was closer to expiring I had two valid SSL certificates for several weeks until the initial certificate expired. You might wait until closer to the expiration date because the new one sets the 90 day clock immediately when it’s installed.
Here’s the thread when I did that Renewing expired free SSL certificate
As @Admin said there is no ‘renewal’ you are essentially installing a new certificate. The fact I had two active, valid SSL certificates didn’t affect anything, when the first one expired it just disappeared off the SSL certificates screen in the client area.