Plugin update fails on all sites

This has been going on for a long time — even though I have all the sites I run that are using Winden added under Manage Sites.

I get the Update failed: Download failed. Unauthorized error every time. This happens on:

https://wpspeedrx.com
https://thestudypro.com
https://deployedglobalsolutions.com

These sites are listed under the Manage Sites area for Winden in my dashboard.

What can we do about this?

purchase_id:

59499