See the original thread at https://community.logos.com/forums/t/213027.aspx
I can confirm that building a PB on Logos 22.0 Beta 4 works, and uploading this PB into the Faithlife cloud seems to work - as per success message - but it doesn't download onto another installation as it should (in my case Verbum 10.1 SR-3, both running on Windows if that's relevant).
A PB built on V10 stable and uploaded successfully will also not download into the L22 Beta instance, thus it seems likely that this is not a Logos coding bug but a server outage (despite not being shown on status.faithlife.com) or the change in an interface communication protocol.
EDIT - UPDATE: This has been fixed by FL and the download now works - thanks!
Latest comment -- We've identified the problem and deployed a fix. Most pending uploads should now be processed, but go ahead and re-upload if any are still not syncing properly.
Thanks for your report!
