activation licence suddenly not working

Hi
I've got a 2021 freelance plus licence, suddenly I get the message License Expired, I checked my account and it still shows my licence as being current. I clicked on activate in the produce activation dialogue and pasted in the licence number for  my acount and get the message "no licences are currently available for this activation code". 

Does anyone know what the problem is please. 

thanks
Brendan

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