Ssh – pgadmin won’t connect to Postgresql via ssh on macOS

I am trying, with no success, to connect pgAdmin 4 to my Postgresql installation on Linode using ssh tunnel as specified in https://linode.com/docs/databases/postgresql/securely-manage-remote-postgresql-servers-with-pgadmin-on-macos-x/

It did not work, with pgAdmin giving me:

Unable to connect to server:

could not connect to server: Connection refused
Is the server running on host "localhost" (::1) and accepting
TCP/IP connections on port 5432?
could not connect to server: Connection refused
Is the server running on host "localhost" (127.0.0.1) and accepting
TCP/IP connections on port 5432?

I spent hours searching for a solution and nothing seems to work. I am for sure missing something. Here is what else I tried:

• I went through all the steps in https://blog.bigbinary.com/2016/01/23/configure-postgresql-to-allow-remote-connection.html

• my netstat -nlt shows:

  tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN
  tcp 0 0 127.0.0.1:587 0.0.0.0:* LISTEN
  tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
  tcp 0 0 0.0.0.0:5432 0.0.0.0:* LISTEN
  tcp 0 0 127.0.0.1:5433 0.0.0.0:* LISTEN
  tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
  tcp6 0 0 :::80 :::* LISTEN
  tcp6 0 0 :::22 :::* LISTEN
  tcp6 0 0 :::5432 :::* LISTEN
  tcp6 0 0 ::1:5433 :::* LISTEN
  

• my ufw status shows:

  Status: active
  To Action From
  22 ALLOW Anywhere
  5432/tcp ALLOW Anywhere
  22 (v6) ALLOW Anywhere (v6)
  5432/tcp (v6) ALLOW Anywhere (v6)
  

• I certainly restarted Postgresql more often than not (for every single modification try)

• if I run psql -h localhost -p 5433 -U postgres it works fine
• also with psql -h localhost -p 5432 -U postgres all works fine

But nothing else I do works for pgAdmin.

Does anyone can shed a light on it? What am I missing? What else could I try?

Thank you
Greetings from Beijing!
Daniel