Hello,
Sorry to hear you are having issues. You can't roll back to older version, unless you have manually previously saved its installation file somewhere other than your download directory, else it might get over written when you download a newer one.
For your issue, first please try, uninstall Start11, reboot immediately (important), download latest version (2.74 beta) available in your account product download page: https://store.stardock.com/myaccount/products. Install it, reboot immediately again. Retest it and report back.
Thank you,
Basj,
Stardock Community Assistant.