Hello,
Sorry to hear you are having issues.
First, the "Start11 not starting" issue. And, you said when you restart Windows Start11 loaded normally. Does the problem appear again after that?
Second, yes, there is Start11 v2 released somewhere in late 2023. But, it is not an update, it is an upgrade. To know more please refer here: https://forums.stardock.com/523474/start11-v2-upgrade-faq
Basj,
Stardock Community Assistant.