I went through this exact same thing in Kingston two years ago. If your spouse is refusing to sign or cooperate, do not worry—you can still proceed with the divorce as long as you can prove you have lived separate and apart for at least 12 months. Your lawyer just needs to make sure personal service of the petition is properly done and filed with an Affidavit of Service in the Supreme Court.
Just to add to Pat’s earlier point—if your ex is hiding or actively evading the process server, your attorney can apply to the judge for Substituted Service (serving by registered mail, newspaper publication, or even via WhatsApp/email in certain modern court rulings).
Spot on. Uncooperative spouses think they can stop a divorce by refusing to accept documents, but the law has built-in mechanisms so one person cannot trap the other in marriage forever.