I have a TP-Link ER605 router and am planning to add an Omada switch.

I installed the Omada software controller to learn how it works, but it cannot be launched. I get an error message "launch failed" and "Details:
[2024-12-26 23:01:16] Port 27217, port 29810, port 29812, port 29813, port 29811, port 27001, port 29814, port 29815 and port 29816 are already in use. Release the ports and try again."

I have no idea how to resolve this and tried to uninstall the controller. But this is impossible because when I try, I always get an error message that "mongod" is running and I need to stop this task. But it is unstoppable. Every time I kill the task in the task manager, it restarts automatically. So, I looked for the installation folder of mongod but there appears to be nonene. It is also not among the installed apps.
What can I do to stop this task sand to uninstall the controller?