As you may know, we use third-party components for some of Toad's capabilities, including report/chart designing features from DevExpress. For Toad DataPoint 4.3, it appears we used DevExpress Reports v. 17.x, but in later releases, we upgraded the DevExpress components to 18.x or later.
Just to confirm, yes, in Toad Data Point 4.3, I do see the Formatting Rules (pressing the smart tag for the report shows the formatting rules, per snap 1 below).
And, yes, in Toad Data Point 5.x, which uses newer versions of Dev Express Report Designer, I'm not seeing them, per snap 2 here.
It appears that Dev Express changed the way they do conditional formatting, switching from binding expressions on the data to some other method (Style sheets, perhaps?). We'll need our Development team to confirm how to do the equivalent of your formatting rules in the latest versions.
I would suggest opening a Support ticket, which is probably the fastest way to get to our Dev team, and will also help us document the resolution or work-around.