Very sorry you couldn’t find the church because the building has many floors, it can be difficult to go floor by floor asking for a church. I have been there myself it is on the fourth floor I strongly advice you go there even though it is not allowed by the Chinese government for foreigners to pray and congregate with Chinese people. They can give you directive on how to join zoom meetings and even help grow your faith in ways that don’t violate the Chinese government regulations and laws. I would kindly and strongly advice you go to that address its very accurate on the fourth floor on a Sabbath for the growth of faith and communion with fellow believers.