I can not answer your questions directly but I can add some observations.
Wheel size should be 27 (I assume you have 27.5 on the Ultra beast).
And it seems you are not using the program with the TORQUE tab? That only matters of course if you are trying to change TORQUE settings.
There is a controller, the 500C that has a different format. It allows you to set 3, 5, or 9 PAS. Of course those numbers are arbitrary. With 3 PAS settings, high would be 3, on 5 PAS, 5 would be high, and on 9 PAS, 9 would be high with "high" being the same power on 3, 5 or 9.
I have read the DPC18 display does not directly correspond to the motor program:
Hi guys, while reviewing some of the EVELO models in Seattle recently, I was able to spend some time digging into the Bafang DPC-18 LCD display and control pad and wanted to share some of the deeper settings. This display is not removable, but it does swivel to reduce glare. It does have a USB...
electricbikereview.com
You might need to contact Biktrix to see how the 0-9 PAS settings correspond to ECO and SPORT.