** SOLVED **
Once again, I'm providing feedback to my own issue. I have finally gotten Better Pushback (BP) to work. This is what was apparently going on and what I did to fix it.
When it is time for the tow to disconnect a small windows pops up asking you to make a choice from one of two items. I was not seeing the window, therefore BP waited for an answer. The reason I wasn't seeing the window was because I changed my text size, from the graphics setting, from 100% to 150%. Text sized 150% is much easier to read on a 4K monitor. The window I wasn't seeing was apparently off-screen. Changing the text size to 100% allows me to select a choice and BP disconnects the tow.
As an aside, I've read that XP12.0.8 also addressed some issues that affected BP.