Sonarr and Radarr unable to add root folder issue

Today i tried to setup radarr and sonarr but i got into the issue that no matter what folder i select to add it always says:

Unable to add root folder

    Folder '/home/heim/Dokumentumok/' is not writable by user 'radarr'

I use both apps with services.sonarr.enable = true; and the same with radarr. I tried adding these with extraGroups = ["sonarr" "radarr"];to my account users.users.heim privilige level but it didnt worked.

I tried using

services.radarr = {
  ...
  user = "heim";
  group = "heim";
  dataDir = "/home/heim/Dokumentumok/"
};

but it just made it crash at startup. Anyone know what i should try? I always restarted the service after rebuilding just to be sure

maybe try

services.radarr = {
  ...
  user = "heim";
  group = "users";
  dataDir = "/home/heim/Dokumentumok/"
};