ADE Computer authorisation

I downloaded ADE & installed it. whe I try to authorize the computer I get the error message

"Code: E_ADEPT_REQUEST_EXPIRED http://adeactivate.adobe.com/adept/Activate 2020-12-30T13:31:59+00:00%20(1609335119000)%20is%20before%2020-12-30T16:01:59.... "

how can I authorize that computer?

thx for your help