Hello,
Sorry to hear you are having issues. But, Start11 work on OS taskbar and, I believe, so does TranslucentTB. That will always cause conflict which will not work.
One more thing, how to stop(disable) Start11 temporarily?
You can look for and run Start10Tweak.exe. Should located here: C:\Program Files (x86)\Stardock\Start11. Run it and
Use the "Unload Start10 now" and "Disable Start10 service" button. It should work for Start11 too. Might need to restart explorer.exe.

Thank you.
Basj,
Stardock Community Assistant.