Nextcloud + CF Origin Server + Nginx Proxy Manager

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Nextcloud version: 29.0.2
Operating system and version: Unraid v6.12.10 (mix of Docker containers and VMs)
Nginx Proxy Manager: v2.11.1

The issue you are facing:

Is this the first time you’ve seen this error? : Y

Steps to replicate it:

  1. Create Origin Server Certificate @ CF
  2. Create new SSL Certificate in NPM using saved .pem and .key
  3. Set my domain A record in CF to Proxy
  4. Configure my site’s URL in NPM to use CF Origin certificate as opposed to Let’s Encrypt

I have re-configured almost two dozen of my websites to use CF Origin certificate as opposed to the Let’s Encrypt certificates that I created originally. All of them work just fine except when I visit

I see the red X to the left of the URL and am told that The connection is not secure and if I wish to proceed. Your time and assistance will be greatly appreciated. Thank you. Peter