I’m confused with the relationships between STX, SATS and the soon-to-be released SATX.

Firstly, I don’t understand why the first Bitcoin dex, named Satoexchange, has an ETH contract. It is the most expensive contract in the planet.

Secondly, how are STX, SATS and SATX (supposed to be satoexchange’s native coin) related to each other. If at all.

Thirdly, what is alexlab? This is supposed to be the pioneer in scaling up Bitcoin.

I read as much as I can about these things. However, the available information is very technical that I drown in the mumbo-jumbo.

Can someone please explain in layman’s terms? Thank you. ????????