I find it a little bit weired that still people use this platform.
ForkDelta, like EtherDelta, is an old platform build to trade ERC20 tokens for Ether. Both of them are safe. However, they loose interest with the rise of other utility Dexs like Uniswap and Binance-Smart-Chain.
I still recommend them for safe trade, but i have to notice that user will have to pay high fees for each trade transaction. However, they should be better that the new swap platforms in terms of fees and even security (after what happened recently to Polygon).
Some new platforms deduct the fees from the token you want to trade.