First of all, their business model is basically the same as any other cloud mining business, which would instantly mean that this is most likely an unprofitable if not an outright ponzi/scam. Even if they deliver the tokens to you, they have control over your funds (or any mining equipment, if in the unlikely circumstance that they actually do mine with investor funds).
They most likely copied their whitepaper and edited some details from this:
https://www.ico-check.com/kelta, based on the appearance of "KLT" in their whitepaper.
I tried out what you said about the team as well, if you click on the linkedin button it literally redirects you back to the site again. I wouldn't be surprised if the team was all fake and stock footage was used either, even though there is no current proof for that.
This is enough to consider them to be a fishy project. I'd be 95% sure that this will turn out to be scam sooner or later.