I understand that if I do not implement the invites that I have before the hard fork, I will lose my reward or my invites will not be available for issuance? Why was the dependence of the issuance of invites made on the time of their issuance?
Bug will be fixed with new version. You don't need to wait for a new version to issue an invitation, issue it as soon as you want.
Why do you get more reward if you issue invitation early? Here is an article that explains that
https://medium.com/idena/idena-hard-fork-announcement-early-invitations-9d6d171015c7I wasted my last invitation because I waited for the last minute to give it to the new account, I made sure it never happen again by giving it to my friend on the first day after the validation, now I'm hoping that he will pass the validation so I can get the 100% rewards, members should give the invitation as soon as you have one, to maximize your rewards.