QUESTION
Why won't Copilink tab stay open after restart?
This is a known behavior in some NinjaTrader configurations.
To keep Copilink open after restart:
1. Open Copilink: Tools → Copilink
2. Save your workspace: Workspaces → Save Workspace
Copilink belongs to the NinjaTrader workspace where it was opened. Before switching workspaces, close Copilink first. If you already switched and Copilink says it is already open, switch back to the workspace where Copilink is visible, close it there, then open it in the new workspace.