As much as I like to be able to use @steemchiller's interface on Hive, I'm not sure you are right about the copyright side of things.
Copyright is in by far the most countries automatic, i.e. as a creator you don't have to put any sign in your work or license file in order to have the copyright. You do have to put in a sign or a license file to refrain from this automatic copyright. If a creator wants his work to be public domain or freely usable, he has to explicitly state so. There are numerous ways to do this, and the creative commons license (in its various forms) is amongst the more well known.
In the post from @steemchiller you cite, he only explicitly gives permission for a local version of his work. He does not explicitly say that his creation is public domain, or distributed under the creative commons license, or any other license which would grant anyone to create and publish something based on his work.
A version on a webserver seems to me far away from "local" and thus far beyond @steemchiller's explicitly stated use of the version he published.
His actions show he does not want his work to be used on the HIVE blockchain. It is therefore fairly easy to argue that the website beeme.icu is contrairy to @steemchiller's intentions with his work and in not in line with the stated permitted use of the "local" version you use.
In my opinion, you are in direct violation of his copyright.
As much as I'd like to use it, it is not (copy)right to do so. You should take this website down, and honour @steemchiller's copyright.
Very well said and explained! 👍🏼