The cron plugin connects succesfully but emails are deleted
When you configure your email settings, you can setup a default department where parsed emails will be assigned to. By default, this is set to "Unassigned". The "Unassigned" department is not shown to customers, but is visible to staff members. To view the Unassigned department, login in the frontend, click on the Tickets tab, click on Advanced Search, selected the Unassigned department from the list of departments and finally press search. All the tickets that have been parsed until now will now show up. Given that you have enough permissions, you can manually move the tickets to the desired department.