So, I've successfully installed Nextcloud on OMV using a RPi, thanks to TechnoDadLife's videos on YouTube!
Now, I'd like to access my Nextcloud server securely from outside of my home network and was following another guide from TechnoDadLife, but I'm getting stuck on creating a letsencrypt certificate.
I'm getting this error:
Unable to register an account with ACME server
ERROR: Cert does not exist! Please see the validation error above. The issue may be due to incorrect dns or port forwarding settings. Please fix your settings and recreate the container
So, I guess it has to do with the port forwarding in my router, I'm not completely sure how to do this. I don't see an external/internal port option. Also, do I have to add my WAN IP Address to it as well? I have a ZyXEL VMG8324-B10A router (see image below)
The guide focuses on creating a DNS at duckdns.org and in the letsencrypt container I have to add my email address I used to sign up for duckdns.org, but I didn't sign up with an email address, I used GitHub instead. So, what value should I put in there as EMAIL?
Also, is it possible to use a subdomain to my own domain instead?