Yes. Create a "Read-Only" key specifically for the trading journal. You can create multiple keys for one trading account.
Tip: For risk management and money management reasons, always create a separate key for each trading platform (trading terminal, trading diary, trading desk, etc.). If you stop day trading or using a trading system, be sure to delete the key in the exchange’s personal dashboard.
No. Currently, the Trading Diary only works with perpetual futures (USDT). Spot trades are market trading transactions, where there's essentially no concept of an "open position" in day trading. To keep things simple in the trading journal app, we don't support Spot trades.