Imap node not triggering

Hi … I have this very simple setup. I would like to get messages when an email pops-up unter a gmail label. I have observed this for a while and I have the problem that it doesn’t trigger automatically.
When I go run the workflow manually it works but it doesn’t work in the background. Does anyone have any idea?

grafik

Did you activate the workflow (in the top right corner)?

Have not heard that it does not work at all but we had reports that it stops to work for some users after a while. We are still investigating:

yes … the workflow is activated