No subscription after reinstall.

Hello,

I've reinstalled my server and i got statement like below:

[root@localhost bryn1u]# subscription-manager register --username bryn1u --password Gxxx --auto-attach
Registering to: subscription.rhn.redhat.com:443/subscription
The system has been registered with ID: 2f74b79b-xxxxxx

Installed Product Current Status:
Product Name: Red Hat Enterprise Linux Server
Status: Not Subscribed

Where is a problem ? I have no more subscription. My end of license is in 2017.