Loving 18! Nice to have support for modern hardware. 
Anyway, when making the "Right box" position active on the secondary monitor, it doesn't show up. I have tried everything. It's just not going to work!
Any thoughts or tips?
For the "Right Box" issue, it sounds like a display mapping or layout glitch. Try resetting your monitor layout in the display settings and make sure the secondary monitor is set to "Extend". Also check if the app or tool you are using is recognizing both screens properly, sometimes it needs a restart after layout changes.
If that does not help, try switching the monitor order or connecting them to different ports, it often forces the system to refresh the window positions.