Yes, you are completely right understand what I asked: yes, I want to remove the expiration date/expiration check from that script.
But in second part you are not fully right: script have window called "submit registration", but in reality it does not work, i enter a code once, this not helped(!!), plus now it obsoleted and not supported more. Probably, there are some mistake in part that's responsible for registratin; so i think the best way is just completely remove or modify this part.