Leveraged tokens (like BTCUP and BTCDOWN, LINKUP, LINKDOWN) need to be enabled on Binance in order to utilize them in the deals. Go to Derivatives -> Leveraged Tokens, watch a short video, pass the quiz, and agree to the exchange Terms to start using such tokens. Note that this is required to copy deals with leveraged tokens.
Binance wrote a thorough guide about them in case you'd like to read more.
Please check if trading with leveraged tokens is allowed in your region.