Reinstall to my new desktop

I have moved from desktop PC on windows10 to new one on windows 11. So, I have tried to reinstall Mathcad prime 2.0 to the new desktop. However, since my account also has been changed from gevproton@ybb,ne.jp to gevproton@yahoo.ne.jp, I could not get license when installing prime 2.0 to new desktop. How can I install it ?