Likely it is temporary off but ETH will be resumed available for users soon because I notice that they still support ERC20 chain with DAI ERC-20 and USDT ERC-20. If they support these stable coins on ERC-20, it makes sense to support Ethereum, the native currency of ERC-20 chain.
I hope so. I've been using more ETH for my daily spending especially since the network fee is so much lower than before since the upgrade.

I'll surely try this exchange on my next one when I need it.
...and yea IMO 0.8% fee is definitely a small price to pay for a privacy focussed transaction.
If you are using a peer-to-peer Bitcoin-FIAT-Bitcoin exchange for example you can expect to
pay a fee/margin of anywhere between 2 and 12% depending on the market conditions so
a 0.8% fee for a crypto-Bitcoin-crypto exchange is very low.
Also DEX is running a service, and they aint doing it for the good of their health, its a business
and needs to make a profit after covering costs.
Offers on privacy focused true p2p exchanges can be steep. But I think it is more in line to compare them with their fellow crypto to crypto instant exchanges. I usually see around 1% to 3%—can depend on the pair and trade mode/type as well. Although the 0.8% is not coming from their personal reserves, some folks who are not in a hurry may not mind it since it is still kyc-free.