Android Question JdbcSQL and Postgresql connection problem

I cant connect with JdbcSQL example to Postgresql db. There is modification I made:
Public pg As JdbcSQL
Private driver As String = "org.postgresql.Driver"
Private jdbcUrl As String = "jdbcostgresql://10.100.100.96/test_18"
Private Username As String = "xxx"
Private Password As String = "xxx"

#AdditionalJar: postgresql-42.2.19.jre7
and program hangs on authorisation phase
2021-03-22 01:06:26.109 PDT [4676] LOG: connection received: host=10.100.100.96 port=59437