I had same problem today, my logfile had these errors and backup jobs where not running
Code:
2022:05:26-16:16:01: Running Backup: type=reseller owner=admindk id=(null)
2022:05:26-16:16:07: Cannot get a backup slot for admindk's backup: ./data/admin/backup_slot: pushing to next task.queue: file is locked by another process: lock created Thu May 26 12:23:06 2022
2022:05:26-16:17:01: Running Backup: type=reseller owner=admindk id=(null)
2022:05:26-16:17:07: Cannot get a backup slot for admindk's backup: ./data/admin/backup_slot: pushing to next task.queue: file is locked by another process: lock created Thu May 26 12:23:06 2022
2022:05:26-16:18:01: Running Backup: type=reseller owner=admindk id=(null)
2022:05:26-16:18:07: Cannot get a backup slot for admindk's backup: ./data/admin/backup_slot: pushing to next task.queue: file is locked by another process: lock created Thu May 26 12:23:06 2022
And no running jobs when i did a process list and then i looked in the path
/usr/local/directadmin/data/admin
And there where 3
backup_slot.lock files and after i deleted them then my backups where running again, no need to restart anything so directadmin must be looking at these files on regular basis to determine if it can run the backup it has in is queue