The procedure for obtaining a wallet

[GusarovFG]

Hello.
I am making a Chia crypto wallet for IOS.
There was a problem getting the wallet balance. When calling the get_coin_records_by_puzzle_hash method, I get an empty array ("coin_records": []) in the response. In the parameters I pass the puzzle_hash of the wallet. Also in the response of the get_sync_status method I get ("synced": false).
Maybe I'm calling the wallet methods in the wrong order.
I would like to receive an answer from you on how to properly get the balance of the wallet step by step.
I use the created wallet with a positive balance.

Thank you.