Abandoned ETH NFT prize hunt with Smart Contracts. Can the prizes still be claimed?

There was an NFT puzzle hunt called Hashquests. It had 5 prizes of iirc up to 20 ETH (?) each, with every NFT sold increasing the prize pool.

It only sold a handful of its NFTs and was rugpulled.

Still there is a small prize and 3 of the 5 prizes are still unclaimed.

Is it possible to claim the prize even though the founders have left the project? The Smart Contracts are still on the blockchain. Claiming the prize was normally done by filling in a form on the website with the correct passphrase and sending it to the Smart Contract.