Ok @cihad_yasar so the reason is your Maintenance & Support plan has expired on your perpetual license, you will need to renew that before you can renew or request any new SSL certs.
Please contact customerservice@wowza.com for assistance in renewing that. I can’t do that for you unfortunately.
By the way in that screenshot you sent me, click on the PRODUCTS tab and it will give you more info on that Maintenance & Support plan.