Connecting to binance.us - nothing happens

I copied the AssetsBinance.csv to AssetsBinanceUS.csv, and added a line for BTCUSD. I copied the AccountsExample.csv to Accounts.csv and replaced every row (except for the header) with just one row for my BinanceUS account. For User I put my API Key, and for Pass I put my API Secret.

I think I've done every step I can find in the Zorro manual, but still, nothing happens when I load up Zorro and select Binance US from the brokers list. I have no idea what's wrong because Zorro doesn't tell me anything. I get the impression that the assets list should change to show everything in my AssetsBinanceUS.csv, but it doesn't.

Johann, please give Zorro a broker connect button, and log connection errors to the status panel so we can debug.

What am I doing wrong?

Select the TradeTest script and click [Trade] to diagnose broker connections. If you're still confused, share your log output. If there is no log output, you're definitely doing something wrong.

I see. It says I need Zorro S for Binance. That's frustrating, I wish BinanceUS was included in the brokers that are available in the free tier.

Thanks for the help.

This page compares free features and paid features:
https://zorro-project.com/manual/en/restrictions.htm