Kelly, Sue, I am not aware of this problem and since I also have Windows 11 and uCreate, I suspect there is something specific in your environment causing the problem.
I suspect that the only way forward will be to have XMPie Support look at your computer and trouble-shoot with a remote web session.
If you have time before arranging a session, here is what I would do:
* uninstall uCreate print
* check you have the latest InDesign installed via the Adobe cloud app.
* check in the programs control panel that you don't have multiple InDesign versions installed (if you do, uninstall the older versions)
* start indesign and hold down ctr-shift-alt keys - you should get asked if you want to delete InDesign preferences - click yes.
* download the latest v12.1.1 uCreate Print installer - or perhaps wait for v12.2 if you prefer and install
* quit all applications and reboot.
* ensure that you login as an administrator on the computer so you will have permissions to install the required system components
* Install the uCreate Print, activate the license, register, test to see if the problem is resolved