Transfer Lightroom 6 to New Windwos 11 Machine

I just completed a new PC build and I need to get the old pc off of my serial number.  I tried everything I can think of. I uninstalled Lightroom on the old machine. I reinstalled it and it worked on that old machine. Then I signed out on that old machine and it excplicity tells me that I am now signed out on that machine. I still can't get Lightroom to authenticate on my new desktop. It's pointing me toward a page for illegally distributed serial numbers now.