About one year ago I bought a VPS and changed my email address. I forgot to change my LinkedIn email address. I normally don't check LinkedIn when I don't receive an email. Recently I had to check something on my old email address, and I saw that I had many, many emails from LinkedIn for endorsements. So I logged in at LinkedIn and I saw I had about 3 or 4 job offers which I didn't notice on time (I think that they were sent about 3 months before I saw them).
What should I do about this? Should I reply and apologize for the late reaction, though they may already have hired somebody? Or should I just ignore it?