Figured out in the end that Nitrogen Sports does have 'issues'.
They are honest, as far as payouts and all go.
But studied them intently for the last 3 months, and realize they pull 'shenanigans'.
When they see what you're good at, they pull lines or switch lines.
They switch lines quickly sometimes, other times every line in a single sport would suddenly vanish.
And this has happened many times, not like I'm saying it happened once.
My only conclusion is what I said:
They are 'tracking' each individual user, seeing what they're best at, then doing this stuff.
I don't know if others do it, but I suspect Nitrogen is doing it.
So I wouldn't recommend them anymore because of this!