Hi
In your case, https probably doesn’t work because you have a self-created (untrusted CA !) cert.
A lot of “apps”, especially python & java are VERY fussy about ssl certs. Lets Encrypt works without ANY issues, so why not use them?
LetsEncrypt is very easy to use, and you only need a domain (kinda obvious, LE doesn’t work on IPs) and http access to your NethServer…
My 2 cents
Andy