Diagnostics / Download diagnostics

Hello, I am trying to initiate diagnostical download tests from multiple devices but the result is not soo good. It worked on multiple devices however wasn’t able to get the result from the generated id… and after a while it is just constantly failing - even after clearing failed tasks and rebooting the entire server. My command as such and it was working for a while :

curl -i ‘http://localhost:7557/devices/E48D8C-RBD25GR%2D5HPacQD2HPnD-B6C00BCC7BD6/tasks?connection_request’ -X POST --data ‘{“name”:“setParameterValues”, “parameterValues”:[[“InternetGateway Device.DownloadDiagnostics.DiagnosticsState”, “Requested”, “xsd:string”],[“Device.IP.Diagnostics.DownloadDiagnostics.DownloadURL”, “http url to ovh/100Mb.bin”, “xsd:string”]]}’

and I was using this code to get the result [ resulted with empty brackets all the time ]:

curl -i ‘http://localhost:7557/devices/?query={"_id"%3A"6207e7b368ff577385808f2e"}