Impossible to activate my 2021 licence

Hello,

Trying to upgrade my 2017 to my new 2021 licence the system bugged.

My 2017 licence is considered as deactivated in the software whereas in my account page it's considered as "in use"...so I cannot deactivate or activate it.

Besides, I was supposed to see my new 2021 licence in the blue banner, but instead I only see an update of the 2017 version.

I also tried to reinitialize my licence and there was an error message.

I have tried all this offline since I cannot access your server otherwise.

Could you please help me. This is urgent. I cannot work anymore since my 2017 is not working and I don't have my 2021 licence.

Thank you for your help