Unable to connect to remote dashboard

Traefik Traefik v2
1

I have a dedicated server configured with:
Ubuntu 18.04
Docker version 19.03.13
docker-compose version 1.27.3

I am attempting to access the Traefik dashboard from a remote PC but am not having any luck so far. I have posted my configuration files below (with limited edits to remove the domain name):

#.env File
TZ=Europe/Amsterdam
DOMAIN=example.net # not actual domain
USERDIR=/home/user

#traefik.yml

version: '3.7'

services:
  traefik:
    image: traefik:v2.3
    container_name: traefik
    ports:
      - 80:80
      - 443:443
    volumes:
      - ${USERDIR}/docker/traefik/traefik.toml:/etc/traefik/traefik.toml
      # touch acme.json && chmod 600 acme.json
      - ${USERDIR}/docker/letsencrypt/acme.json:/acme.json:rw
      - /var/run/docker.sock:/var/run/docker.sock:ro
    networks: 
      - app-net
    labels:
      - traefik.enable=true
      - traefik.http.routers.api.rule=Host(`traefik.${DOMAIN}`)
      - traefik.http.routers.api.service=api@internal
      - traefik.http.routers.api.entrypoints=websecure
      # ACME
      - traefik.http.routers.api.tls.certresolver=myresolver
      ## HTTP REDIRECT
      - traefik.http.middlewares.redirect-to-https.redirectscheme.scheme=https
      - traefik.http.routers.redirect-https.rule=hostregexp(`{host:.+}`)
      - traefik.http.routers.redirect-https.entrypoints=web
      - traefik.http.routers.redirect-https.middlewares=redirect-to-https
networks: 
  app-net:
    external: true

#traefik.toml

[log]
  # DEBUG, PANIC, FATAL, ERROR, WARN, and INFO
  level = "DEBUG" # Should change this after setup

[api]
  dashboard = true
  debug = true
  insecure = true # If true, you can access dashboard on 8080 port (open 8080 first..)

[providers.docker]
  endpoint = "unix:///var/run/docker.sock"
  exposedByDefault = false # traefik.enable=true is needed
  network = "app-net"

[entryPoints]
  [entryPoints.web]
    address = ":80"

  [entryPoints.websecure]
    address = ":443"

[certificatesResolvers.myresolver.acme]
  email = "email@email.com"
  storage = "acme.json"
  # For testing, use staging server - uses production by default
  #caServer = "https://acme-staging-v02.api.letsencrypt.org/directory"
  [certificatesResolvers.myresolver.acme.httpChallenge]
    # Port 80 needs to be open
    entryPoint = "web"

[ping]
  entryPoint = "web"

[http]
  [http.routers]
     # Define a connection between requests and services
     [http.routers.to-dashboard]
      rule = "Host(`traefik.${DOMAIN}`)"
      service = "traefik"

And finally, this is the error I get when I run docker-compose -f traefik.yml run traefik:

ERRO[2020-09-26T20:05:06Z] Unable to obtain ACME certificate for domains "traefik.<edit>.<edit>": unable to generate a certificate for the domains [traefik.<edit>.<edit>]: error: one or more domains had a problem:
[traefik.<edit>.<edit>] acme: error: 400 :: urn:ietf:params:acme:error:connection :: Fetching http://traefik.<edit>.<edit>/.well-known/acme-challenge/eDCPXACyrzWSO29WStXAY8pIvSeEar1nthz7dPbT59I: Connection refused, url:   providerName=myresolver.acme routerName=api@docker rule="Host(`traefik.<edit>.<edit>`)"

I can also confirm that I am not being interrupted by a firewall.