Stats -- Initiate Processing returns request_id fine but getting results varies

Tried C# and now PowerShell. Attempting to automate daily download of calls. Sending Invoke-WebRequest which returns request_id just fine (every time). Then use the request_id to get results...sometimes it only returns 200 "status": "processing" and other times it returns "download_url" as expected. When the "status": "processing" is returned, it of course bombs out the rest of the script which opens the download_url to save the file.

Seems to be some issue on Dialpad's side. Any help is appreciated!