A few months ago I wrote here you should not ever sent your WAN coins to Ethereum wallets because they will be gone forever after that. Apparently, I was wrong. Not forever. You still can get them back. At least that is what the creator of this Reddit post says: https://www.reddit.com/r/wanchain/comments/8kvd99/how_to_recover_wanchain_sent_to_ethereum_address/.

I am not sure if it really works but people are upvoting him and comments are positive.