If you use cloudflare, probably you will only see SSL cert issued by cloudflare at your end signed by Google Trust LLC at your end. There is no way to see or check the original cert installed in your server. For example you want to see the expiry date or certificate issuing authority.

I will show you two simple ways.

  1. Disable cloudflare DNS. Go to DNS, look for A record, change orange (proxied) to grey (DNS only). This will route all traffic direct to origin server (disables cloudflare). Now check the SSL certificate you will notice the difference.
  2. Same method, usse https://IP of the server and select certificate to see the expiry date.

You will see SSL installed properly, check the expiry date, CA authority.