After creating a service-user - mails can no longer be fetched

Question

I have a new Service-desk installation. I have configured a mailbox to fetch mails. Tickets were created automatically. After that I created an additional Support-user and gave him rights to the project. Additionally I syncronized an active directory for the customers.
Now no more mails are collected...; - (
Also disabling and deleting the user doesn't bring any improvement.

2018-01-11 10:17:00,904 Caesium-1-2 WARN anonymous    ticket [c.a.mail.incoming.mailfetcherservice] ticket[10100]: Der Vorgang kann aufgrund einer ungültigen Lizenz nicht erstellt werden: [Sie können derzeit keine Vorgänge erstellen, da dafür Zugriff auf eine JIRA-Anwendung erforderlich ist. Um Zugriff auf eine Anwendung zu erhalten, müssen Sie Mitglied einer Gruppe sein, die einer Anwendung zugewiesen ist.]

Markus Remmel · Answer

I have the same problem. What had been the solution?

lindner_igzev_de · Answer

addendum
If I deactivate the external user directory, the mail handler can retrieve mails and generate a ticket from them.
The user directory is only for the employees to open tickets. The service desk agents are only managed in the local directory. That's only two agents.

lindner_igzev_de · Answer

Hi Alexey

The licenses should be fine, and they were bought three weeks ago.
There is only one account in use. The license includes three accounts.