"Unfortunately, Quantopian does not support Robinhood Gold accounts in live trading. We support Cash accounts and Robinhood Instant accounts, but we do not yet support Gold accounts. I've notified our engineers of the problem. They will have a look and see if we can add support for Robinhood Gold accounts or at the very least let you know before you launch your algo that Gold accounts are not supported." Jamie McCorriston
Be careful, using the Robinhood Gold will not result in an error, but rather incorrect reporting of your buying power. Thanks to Jamie for getting to the bottom of this.