Since migrating, I cannot sign into my Minecraft account. When I attempt to do so, I am prompted to purchase the game. Interestingly, my son's account still signs in, but can only play offline.

After Migration, I cannot log in to my Minecraft account using Microsoft. I can log in to Microsoft itself. When I attempt to log in to the MC launcher, I am prompted to purchase the game despite having pair for and played it some time ago. Interestingly, my son's account still signs in on this machine, but can only play offline. He can log in on his computer with no issues.