It's a good thing this is _very_ illegal :)
It's certainly not illegal for me to do it, if you happen to tell me your stop loss orders over beers, or if I predict people's stop loss orders using public information and/or a sophisticated model.
So which side of the line is Trigger on? They don't seem to be a broker, exchange, or fiduciary, and they wouldn't be getting the relevant information from those sources.
"The User acknowledges and agrees that upon posting or transmitting information [...] on the APP, the User assigns to the Company [...] all rights, interest and title in and to such information"
If you want to manage your money through a tech startup, I suggest choosing one that is a broker and/or has a fiduciary responsibility to you!