Make sure the problematic PC s are set in BIOS to not see the USB stick (Dongle) first. OR unplug the dongle during boot.

Sometimes Windows Hibernation operations can also interfere: https://support.microsoft.com/en-us/help/920730/how-to-disable-and-re-enable-hibernation-on-a-computer-that-is-running

Possibly Avid Link?

For many complex applications, familiarity and thorough understanding of the interactions of hardware and software are crucial to the success of the application. For buy-in to this mega shift there will have to be tangiblie benefit regards to application performance versus the obvious alternative. Some developers may decide supporting three environments

Yeah, I eventually got Link 2020.5 to work for the MC 2020.6 update after manual license entry.

Maybe try a really high resolution pair of still shots from a Dslr camera and then pan and zoom to taste?

Its important to search for any Sony legacy plugins and remove them first, before installing the new Nablet ones.

Maybe time for a Linux version....

I usually have to enter the email and password for MC. I think the Link has become somewhat overgrown. A simple license tool rather than a marketing portal would better serve the user.

I had to use the manual license entry. Other than that, installation went smoothly.