Fix output from release trade and notify about useless accounts

handler/sinks/__init__.py

@@ -67,6 +67,7 @@ class Sinks(util.Base):
             for account in list(accounts):
                 if len(account["account_number"]) == 1:
                     account_infos[bank].remove(account)
+                    self.log.warning(f"Potentially useless bank account: {account}")
         currencies = [account["currency"] for bank, accounts in account_infos.items() for account in accounts]
 
         self.account_info = account_infos