Trial version "Subscription Expired"

[S54]

Installer(.exe or .msi):

License type(Free, Trial/License code):

Studio/Robot version:

Current behavior:

Screenshot:

Hello.
I’m thinking about installing Enterprize Edition as a trial.

Yesterday I got a trial license code and enter it to activate box.
The mode I choose is manual activation because I wanna use on business field behind a firewall.

However, I got a error, “Subscription Expired”.
I don’t know why the error appeared.
The code was a new one.

I need a solution for our business use.
Please suggest.

Regards.