Thanks for the reply Aitor. I realised why it happened – it’s because yesterday morning Binance stopped API access for all non-KYC users, which includes me (https://www.binance.com/en/support/announcement/654c092a2a2347bdb5ccd6faa0c6c039). Because my API access was cut off, GB couldn’t place any DCA or CT orders.
I’ve switched my API over to a different account (which is KYC verified) and will restart GB and the strategy later today :)