I am self-hosting WordPress on Proxmox LXC via [Tunrkey WordPress,](https://www.turnkeylinux.org/wordpress) and have NGINX reverse proxy with Let’s Encrypt to point my domain (gg.<my domain>.net) towards my WordPress Proxmox LXC. The website is using the default theme and I have no other themes installed and zero plugins installed. The website is viewable from my PC, MAC, Android phone, but only iOS phone saying “Site can’t be reached” with ERR\_CONNECTION\_CLOSED (same error in iOS Safari or iOS Chrome). I am using my domain (https) to reach my WordPress from each of those devices.
My WordPress site health only has one issue reported “Page cache is not detected but the server response time is OK” which does not seem related.
I first thought it is something to do with my NGINX setup, but I have another host (configured inside the same NGINX) pointing to another LXC (inside the same Proxmox) that uses [Asp.Net web server on Apache](https://www.turnkeylinux.org/asp-net-apache), and my iOS deceives able to view that Asp.Net website. So, it has to do with something in WordPress, I guess.
I have updated everything from Proxmox, NGINX, WordPress, etc… to latest versions but nothing helped.
Any ideas?
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