I'll send you a message to contact you now. There must be something for you. There is a simple reason. There must be something. I haven't contacted you for so many years, but I usually don't. If I contact you again after many years, there must be something you want. He knows what you may be doing now, and he wants your help.
I think this kind of thing should be treated with a normal heart. If you want to help him, you should reply to him. If you don't want to help him, don't reply.
Then he should stop looking for you.