Hi,
I have started a trial period for Start 11 (and Fences too). First time I installed, it was working. I configured around and liked it. Then I installed a Windows component (namely WSL) and after restart the taskbar got empty. Non of my pinned apps nor the running apps were shown on the taskbar, just the start button at the left side.
I have a laptop with a built in monitor and two external monitors. Special case is that my primary screen is one of my external monitors. BTW, before the first reboot it was not a problem.
Another note is that I use DisplayFusion for the second and third taskbars. This wasn't a problem either for the first time.
I have read the forum posts about the start* programs, all of them concluded to uninstall / restart / Purge_StartALL.bat / reinstall cycle. I did it twice but no success. Additionally, during purge, Bitdefender intercepted and was cleaning a threat for minutes when it tried to restart Explorer.
I would appreciate any help, since I like it very much and would like to buy it. 
Thank you,
Csaba