2021 activation code unknown

Again another problem.

I click on icon Trados 2021. Appear  a window with the following message: ACTIVATION OF 2021 PRODUCT - This message includes a BUTTON with ACTIVATE.

I push the button and I enter the new activation code. another message appears THE LICENCE HAS BEEN DISACTIVATED. Please activate the 2021

I try this procedure several times. Please help me Lorella