I reached out to them last month and received this:
“We are glad to inform you that our Tech team is already working on “Smart Things”. We will be releasing the compatibility with SmartThings early next month i.e. May, 2020. We will make sure to inform you once the update gets released.”
So full support should be coming at some point this month!
Will be great as there is nothing else that will control my Mr. Cool minisplit. I already tried the Cielo app, and it works great with my Mr. Cool.
FYI for others, there are two USB sticks Mr. Cool used. The current one is made by Cielo. The old one wasn’t (so no smartthings support is coming for those that I know of).