Configure https + nginx reverse proxy

[kristiankunc]

Expected Behaviour:

Access pihole admin web panel with https.

Actual Behaviour:

Unable to connect

Debug Token:

https://tricorder.pi-hole.net/VombCvpY/

To start with, yes, I do understand the error unable to connect on the pihole server because obviously https is not enabled.
I tried to follow this help article Enabling HTTPS for your Pi-hole Web Interface which has not helped me since my subdomain (dns.kristn.co.uk) is pointing to my nginx reverse proxy where the ssl certificate also lives (https://cdn.kristn.co.uk/i/i9cgp).
Going to dns.kristn.co.uk just shows a blank page and an error is in the logs, can't connect.

I am running pihole in a linux container via proxmox (1 core, 512mb ram)

[jfb]

Your FTL log is full of entries showing queries from IP's outside of your network.

Is port 53 open on your router, exposing Pi-hole to the internet?

[kristiankunc]

Was not meant to be, I've disabled it.
Well now that it won't be forwarded I suppose I will use a vpn instead anyway so I don't need much help anymore, thank you!