the EARN link is here :  https://www.blockchain.com/en/earn


if you invest into bitcoin potencialy there are more risks then investing into USDT  you have potencial that it goes down for USDT its a stablecoin...  i wont a stable investment for my money 7 %  APY is good for me as long as the exchange is thrustworthy  ...  banks in my country give 3,5 % on EUR