Hi tijs,
I was using a fresh database bacause i was also facing the same problem as original post. The exact problem was : Unable to login to Flowable UI applications after a fresh installation . For now i have used the trick mentioned in the comments and i think the issue is still open on github.
As for login using kermit when i was facing this login issue, i checked the database and kermit was the user with access to admin group, thats why i tried using kermit. Later on i realised that admin is the user with privilege to access idm and all other apps.
Thanks
Arpit