Permission Denied on Select tables after giving Select permission to new user in Azure Postgres SQL single server database

Question

I have Azure postgresql single server database which I need to give read permission to a newly created user.

CREATE USER "test@hostName" PASSWORD 'XXXX';
GRANT CONNECT ON DATABASE "test" TO "test@hostName";

ALTER DEFAULT PRIVILEGES
FOR USER pgadmin
IN SCHEMA public
GRANT SELECT   ON TABLES TO  "test@hostName" ;

SELECT *
FROM information_schema.role_table_grants
WHERE grantee = 'test@hostName';

This is the result

But when this user executes a select query Permission Denied message appears and not allowed to select. Any help is appreciated.

Below the result for pg_class for the selected table. It shows that pgadmin has full rights and required user has read access.

this is the result I got when running the query: SELECT relacl FROM pg_class WHERE relname = 'tablename';

result:

"{pgadmin=a*r*w*d*D*x*t*/pgadmin,""\""d_reader@adb-psql-tckt-history\""=r/pgadmin""}"