rejected withdrawal.

Hi there! I have rejected withdrawal. Note: PPH Admin - Issue with buyer. This order was completed and the buyer marked it as complete. After few months his article was deleted. I wrote a new article for him. When the buyer ordered link(a long time ago) it was dofollow, now all links are nofollow, I can’t do something with this, because I am the only publisher on this platform. That is why I do not write now in my offer that this link is dofollow. I don't know how to resolve this Issue with buyer. I agree to cancel this order and refund his money, if peopleperhour think that I am wrong. Technically I cant provide him now dofollow link. Can you help me with this?