So they are still in business and you are getting communication from them? Their website makes it seem like they haven’t done anything since 2017.
The release is expected In September; they’re really close to a launch version but they’ve been making a bunch of improvements. The site is probably not updated because they switched from kick starter to another backing site indiegogo
Progress is only reported to the backers of the product.
Here’s the latest update https://www.indiegogo.com/projects/moai-robot-for-your-aquarium
I have faith this will come to fruitition... for the sake of me being to lazy to clean the glass every day...