pgadmin / postgresql - no pg_hba.conf entry for host
You're editing the wrong pg_hba.conf, connect locally with psql and run this

SHOW hba_file;


Then from outside edit that file. Perhaps you have two versions of PostgreSQL or you built your own. Or, you're restarting the wrong PostgreSQL. Perhaps make sure you're restarting the right one by connecting, again locally over psql, and running

SELECT pg_reload_conf();


Make sure you're editing the pg_hba.conf on the SERVER you're trying to connect to and not the CLIENT. (per @joanolo)